Show data table
| 1950 | 2.6B | 1976 | 12B | 2002 | 44.2B |
| 1951 | 3.36B | 1977 | 13B | 2003 | 52.3B |
| 1952 | 4.56B | 1978 | 15.9B | 2004 | 60.3B |
| 1953 | 5.17B | 1979 | 20.5B | 2005 | 61.7B |
| 1954 | 5B | 1980 | 28.4B | 2006 | 64.2B |
| 1955 | 4.91B | 1981 | 26.9B | 2007 | 73.4B |
| 1956 | 5.02B | 1982 | 27.7B | 2008 | 72.9B |
| 1957 | 4.96B | 1983 | 26.4B | 2009 | 64B |
| 1958 | 4.97B | 1984 | 25.4B | 2010 | 64B |
| 1959 | 4.98B | 1985 | 26B | 2011 | 66.6B |
| 1960 | 5.13B | 1986 | 30.4B | 2012 | 65.5B |
| 1961 | 5.31B | 1987 | 34.9B | 2013 | 63.8B |
| 1962 | 5.6B | 1988 | 38.4B | 2014 | 67B |
| 1963 | 5.81B | 1989 | 37.5B | 2015 | 60B |
| 1964 | 6.16B | 1990 | 43.5B | 2016 | 53.3B |
| 1965 | 6.48B | 1991 | 47B | 2017 | 52.1B |
| 1966 | 6.69B | 1992 | 45.6B | 2018 | 55.8B |
| 1967 | 6.93B | 1993 | 38.1B | 2019 | 56.6B |
| 1968 | 6.22B | 1994 | 38.6B | 2020 | 58.3B |
| 1969 | 6.2B | 1995 | 38.3B | 2021 | 65.1B |
| 1970 | 6.79B | 1996 | 38.6B | 2022 | 64B |
| 1971 | 7.52B | 1997 | 39.9B | 2023 | 73.6B |
| 1972 | 8.79B | 1998 | 41.2B | 2024 | 89.8B |
| 1973 | 9.45B | 1999 | 40.8B | 2025 | 89B |
| 1974 | 10.5B | 2000 | 39.3B | | |
| 1975 | 12.9B | 2001 | 39.5B | | |
Show data table
| 1950 | 7.2% | 1976 | 5.2% | 2002 | 2.5% |
| 1951 | 8.3% | 1977 | 4.9% | 2003 | 2.5% |
| 1952 | 10.4% | 1978 | 4.7% | 2004 | 2.5% |
| 1953 | 11% | 1979 | 4.7% | 2005 | 2.4% |
| 1954 | 10.1% | 1980 | 5% | 2006 | 2.4% |
| 1955 | 9.1% | 1981 | 5% | 2007 | 2.4% |
| 1956 | 8.6% | 1982 | 5.4% | 2008 | 2.5% |
| 1957 | 8% | 1983 | 5.4% | 2009 | 2.6% |
| 1958 | 7.6% | 1984 | 5.5% | 2010 | 2.6% |
| 1959 | 7.3% | 1985 | 5.3% | 2011 | 2.5% |
| 1960 | 7.1% | 1986 | 5.1% | 2012 | 2.4% |
| 1961 | 6.9% | 1987 | 4.7% | 2013 | 2.3% |
| 1962 | 6.9% | 1988 | 4.2% | 2014 | 2.2% |
| 1963 | 6.8% | 1989 | 4% | 2015 | 2% |
| 1964 | 6.6% | 1990 | 4% | 2016 | 2% |
| 1965 | 6.4% | 1991 | 4.1% | 2017 | 1.9% |
| 1966 | 6.2% | 1992 | 3.9% | 2018 | 1.9% |
| 1967 | 6.2% | 1993 | 3.6% | 2019 | 2% |
| 1968 | 5.9% | 1994 | 3.4% | 2020 | 2.1% |
| 1969 | 5.5% | 1995 | 2.8% | 2021 | 2% |
| 1970 | 5.2% | 1996 | 2.7% | 2022 | 2% |
| 1971 | 5.1% | 1997 | 2.5% | 2023 | 2.2% |
| 1972 | 5.2% | 1998 | 2.5% | 2024 | 2.4% |
| 1973 | 4.9% | 1999 | 2.4% | 2025 | 2.4% |
| 1974 | 5.1% | 2000 | 2.4% | | |
| 1975 | 5.3% | 2001 | 2.4% | | |