Show data table
| 1957 | 45.4M | 1980 | 416M | 2003 | 612M |
| 1958 | 48.4M | 1981 | 439M | 2004 | 587M |
| 1959 | 59M | 1982 | 465M | 2005 | 604M |
| 1960 | 56.1M | 1983 | 485M | 2006 | 702M |
| 1961 | 55.5M | 1984 | 458M | 2007 | 1.03B |
| 1962 | 60.4M | 1985 | 502M | 2008 | 1.36B |
| 1963 | 61.9M | 1986 | 626M | 2009 | 1.57B |
| 1964 | 61.9M | 1987 | 647M | 2010 | 1.56B |
| 1965 | 62.9M | 1988 | 588M | 2011 | 1.59B |
| 1966 | 76.1M | 1989 | 383M | 2012 | 1.47B |
| 1967 | 105M | 1990 | 322M | 2013 | 1.44B |
| 1968 | 128M | 1991 | 433M | 2014 | 1.55B |
| 1969 | 126M | 1992 | 368M | 2015 | 1.61B |
| 1970 | 110M | 1993 | 391M | 2016 | 1.77B |
| 1971 | 109M | 1994 | 408M | 2017 | 1.94B |
| 1972 | 129M | 1995 | 300M | 2018 | 1.96B |
| 1973 | 151M | 1996 | 417M | 2019 | 2.03B |
| 1974 | 163M | 1997 | 444M | 2020 | 2.06B |
| 1975 | 181M | 1998 | 496M | 2021 | 2.18B |
| 1976 | 295M | 1999 | 512M | 2022 | 2.33B |
| 1977 | 263M | 2000 | 529M | 2023 | 2.46B |
| 1978 | 305M | 2001 | 529M | 2024 | 2.53B |
| 1979 | 400M | 2002 | 522M | 2025 | 2.56B |
Show data table
| 1959 | 22.5% | 1982 | 9.9% | 2005 | 4.8% |
| 1960 | 20.4% | 1983 | 9.9% | 2006 | 4.7% |
| 1961 | 16.5% | 1984 | 9.2% | 2007 | 5.9% |
| 1962 | 18.1% | 1985 | 10% | 2008 | 6% |
| 1963 | 17.1% | 1986 | 9.8% | 2009 | 6.4% |
| 1964 | 14.8% | 1987 | 9.6% | 2010 | 5.7% |
| 1965 | 13.4% | 1988 | 9.4% | 2011 | 5.4% |
| 1966 | 19.5% | 1989 | 9.1% | 2012 | 4.7% |
| 1967 | 23.5% | 1990 | 7.8% | 2013 | 4.2% |
| 1968 | 24.1% | 1991 | 10% | 2014 | 4.2% |
| 1969 | 20.2% | 1992 | 6.9% | 2015 | 4.2% |
| 1970 | 18.5% | 1993 | 7% | 2016 | 4.4% |
| 1971 | 17.2% | 1994 | 6.5% | 2017 | 4.7% |
| 1972 | 18.4% | 1995 | 4.5% | 2018 | 4.6% |
| 1973 | 18.7% | 1996 | 6% | 2019 | 4.6% |
| 1974 | 17.5% | 1997 | 6.1% | 2020 | 4.7% |
| 1975 | 15.2% | 1998 | 6.3% | 2021 | 4.7% |
| 1976 | 17.2% | 1999 | 6.3% | 2022 | 4.8% |
| 1977 | 12.5% | 2000 | 6.3% | 2023 | 4.8% |
| 1978 | 11.7% | 2001 | 5.9% | 2024 | 4.7% |
| 1979 | 12.2% | 2002 | 5.4% | 2025 | 4.6% |
| 1980 | 10.6% | 2003 | 6% | | |
| 1981 | 10% | 2004 | 5.1% | | |