Secondary education, teachers, gaps filled in Middle income
Middle income: Secondary education, teachers, gaps filled was 32.02 million in 2024. ▲ Rising
Secondary education, teachers, gaps filled in Middle income, 1970–2024
Source: Statizoid (derived).
Analysis
In 2024, secondary education, teachers, gaps filled in Middle income stood at 32.02 million. That is the highest value across all 55 years on record.
That represents a change of up 2.8% on the previous year and up 31.3% over ten years.
Over the whole period, secondary education, teachers, gaps filled in Middle income peaked at 32.02 million in 2024 and was at its lowest, 7.33 million, in 1971.
Middle income ranks 3rd of 43 groups on this measure, in the top 10%.
The long-run direction has been consistently rising across the 55 years of available data.
Secondary education, teachers, gaps filled in Middle income, year by year
| Year | Value | Change |
|---|---|---|
| 1970 | 10.21 million | — |
| 1971 | 7.33 million | -28.2% |
| 1972 | 7.69 million | +4.9% |
| 1973 | 8.21 million | +6.8% |
| 1974 | 10.75 million | +30.9% |
| 1975 | 8.93 million | -16.9% |
| 1976 | 9.27 million | +3.9% |
| 1977 | 10.19 million | +9.8% |
| 1978 | 10.87 million | +6.7% |
| 1979 | 13.72 million | +26.2% |
| 1980 | 12.03 million | -12.3% |
| 1981 | 11.76 million | -2.3% |
| 1982 | 12.24 million | +4.1% |
| 1983 | 12.54 million | +2.5% |
| 1984 | 12.65 million | +0.9% |
| 1985 | 13.38 million | +5.8% |
| 1986 | 12.98 million | -3.0% |
| 1987 | 13.59 million | +4.7% |
| 1988 | 13.96 million | +2.7% |
| 1989 | 14.16 million | +1.4% |
| 1990 | 15.25 million | +7.7% |
| 1991 | 15.35 million | +0.6% |
| 1992 | 15.44 million | +0.6% |
| 1993 | 15.25 million | -1.2% |
| 1994 | 15.47 million | +1.4% |
| 1995 | 15.76 million | +1.9% |
| 1996 | 16.28 million | +3.3% |
| 1997 | 16.62 million | +2.1% |
| 1998 | 17.23 million | +3.7% |
| 1999 | 17.54 million | +1.8% |
| 2000 | 17.85 million | +1.8% |
| 2001 | 17.81 million | -0.2% |
| 2002 | 18.61 million | +4.5% |
| 2003 | 19.32 million | +3.8% |
| 2004 | 19.74 million | +2.2% |
| 2005 | 20.37 million | +3.2% |
| 2006 | 20.80 million | +2.1% |
| 2007 | 21.71 million | +4.4% |
| 2008 | 22.61 million | +4.1% |
| 2009 | 23.07 million | +2.1% |
| 2010 | 23.64 million | +2.5% |
| 2011 | 23.98 million | +1.5% |
| 2012 | 24.27 million | +1.2% |
| 2013 | 23.82 million | -1.9% |
| 2014 | 24.39 million | +2.4% |
| 2015 | 24.88 million | +2.0% |
| 2016 | 25.72 million | +3.4% |
| 2017 | 26.06 million | +1.3% |
| 2018 | 26.42 million | +1.4% |
| 2019 | 28.21 million | +6.8% |
| 2020 | 29.00 million | +2.8% |
| 2021 | 29.57 million | +2.0% |
| 2022 | 30.41 million | +2.8% |
| 2023 | 31.14 million | +2.4% |
| 2024 | 32.02 million | +2.8% |
Biggest year-on-year movements
Years where Secondary education, teachers, gaps filled in Middle income changed far more than this series normally does. A large move can be a real event or a change in how the figure was measured — the source note below says who published it.
| Year | Change | From | To |
|---|---|---|---|
| 1971 | -28.2% | 10.21 million | 7.33 million |
| 1974 | +30.9% | 8.21 million | 10.75 million |
| 1979 | +26.2% | 10.87 million | 13.72 million |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1970s | 9.72 million | 7.33 million | 13.72 million | 10 |
| 1980s | 12.93 million | 11.76 million | 14.16 million | 10 |
| 1990s | 16.02 million | 15.25 million | 17.54 million | 10 |
| 2000s | 20.19 million | 17.81 million | 23.07 million | 10 |
| 2010s | 25.14 million | 23.64 million | 28.21 million | 10 |
| 2020s | 30.43 million | 29.00 million | 32.02 million | 5 |
Countries ranked near Middle income
More education data for Middle income
- Population ages 15-64 66.5% (2025)
- Secondary education, duration (years), annual growth rate 0 % change on previous year (2025)
- Primary education, pupils, per capita 0.0986 units per person (2024)
- Primary education, pupils, per unit of GDP 0 units per US$ of GDP (2024)
- Secondary education, pupils, gaps filled 510.99 million (2024)
- Primary education, teachers, gaps filled 25.11 million (2024)
- Primary education, pupils, annual growth rate 1.71 % change on previous year (2024)
- Primary education, pupils, gaps filled 589.09 million (2024)
- Population ages 0-14 24.4% (2025)
- Primary education, duration (years), annual growth rate 0 % change on previous year (2025)
Frequently asked questions
- What is secondary education, teachers, gaps filled in Middle income?
- Secondary education, teachers, gaps filled in Middle income was 32.02 million in 2024, according to Statizoid (derived).
- What is the highest secondary education, teachers, gaps filled recorded in Middle income?
- The highest recorded value was 32.02 million in 2024.
- What is the lowest secondary education, teachers, gaps filled recorded in Middle income?
- The lowest recorded value was 7.33 million in 1971.
- How does Middle income rank for secondary education, teachers, gaps filled?
- Middle income ranks 3rd out of 43 groups with data for 2024.
- Is secondary education, teachers, gaps filled rising or falling in Middle income?
- Over the last ten years it is up 31.3%. The long-run trend across the full record is rising.
- Where does this Middle income data come from?
- The figures come from Statizoid (derived), published as part of Secondary education, teachers, gaps filled. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 55 observations, free to reuse under Derived by Statizoid from the sources named on the page.
How this figure is calculated
Secondary education, teachers with 719 missing years estimated by linear interpolation between the nearest real observations. Only gaps of 4 years or fewer are filled, and never beyond the first or last actual measurement — these are filled holes, not forecasts.
Computed from
- Secondary education, teachers Data API, UN Educational, Scientific and Cultural Organization (UNESCO)
Statizoid computes this series; the underlying measurements belong to the publishers named above. The arithmetic is applied to every country and year where both inputs report, and nothing is estimated unless the page says so.
About this data
Secondary education, teachers with 719 missing years estimated by linear interpolation between the nearest real observations. Only gaps of 4 years or fewer are filled, and never beyond the first or last actual measurement — these are filled holes, not forecasts.