Tableau de données
| 1949 | 231 M | 1975 | 2,81 Md | 2001 | 6,2 Md |
| 1950 | 237 M | 1976 | 2,9 Md | 2002 | 6,73 Md |
| 1951 | 279 M | 1977 | 3,7 Md | 2003 | 8,36 Md |
| 1952 | 330 M | 1978 | 4,23 Md | 2004 | 9,38 Md |
| 1953 | 350 M | 1979 | 5,04 Md | 2005 | 9,57 Md |
| 1954 | 417 M | 1980 | 5,27 Md | 2006 | 10,2 Md |
| 1955 | 447 M | 1981 | 4,53 Md | 2007 | 11,5 Md |
| 1956 | 488 M | 1982 | 4,83 Md | 2008 | 12,4 Md |
| 1957 | 486 M | 1983 | 4,26 Md | 2009 | 12,1 Md |
| 1958 | 436 M | 1984 | 3,98 Md | 2010 | 11,2 Md |
| 1959 | 396 M | 1985 | 3,88 Md | 2011 | 11,6 Md |
| 1960 | 455 M | 1986 | 5,35 Md | 2012 | 10,4 Md |
| 1961 | 552 M | 1987 | 6,54 Md | 2013 | 10,2 Md |
| 1962 | 604 M | 1988 | 6,73 Md | 2014 | 10,3 Md |
| 1963 | 637 M | 1989 | 6,4 Md | 2015 | 8,67 Md |
| 1964 | 735 M | 1990 | 7,42 Md | 2016 | 9,12 Md |
| 1965 | 750 M | 1991 | 7,25 Md | 2017 | 9,58 Md |
| 1966 | 771 M | 1992 | 7,9 Md | 2018 | 11,1 Md |
| 1967 | 884 M | 1993 | 7,05 Md | 2019 | 12 Md |
| 1968 | 906 M | 1994 | 7,14 Md | 2020 | 13,1 Md |
| 1969 | 1,02 Md | 1995 | 8,01 Md | 2021 | 14,4 Md |
| 1970 | 1,08 Md | 1996 | 7,83 Md | 2022 | 13,6 Md |
| 1971 | 1,25 Md | 1997 | 6,84 Md | 2023 | 16,6 Md |
| 1972 | 1,52 Md | 1998 | 6,84 Md | 2024 | 23,6 Md |
| 1973 | 1,92 Md | 1999 | 7,03 Md | 2025 | 28,9 Md |
| 1974 | 2,29 Md | 2000 | 5,97 Md | | |
Tableau de données
| 1956 | 5,8% | 1980 | 2,8% | 2004 | 1,4% |
| 1957 | 5,3% | 1981 | 2,9% | 2005 | 1,4% |
| 1958 | 4,7% | 1982 | 3,1% | 2006 | 1,4% |
| 1959 | 4% | 1983 | 2,8% | 2007 | 1,3% |
| 1960 | 3,7% | 1984 | 2,9% | 2008 | 1,3% |
| 1961 | 4,1% | 1985 | 2,8% | 2009 | 1,4% |
| 1962 | 4,1% | 1986 | 2,7% | 2010 | 1,3% |
| 1963 | 4% | 1987 | 2,7% | 2011 | 1,3% |
| 1964 | 3,9% | 1988 | 2,6% | 2012 | 1,2% |
| 1965 | 3,6% | 1989 | 2,5% | 2013 | 1,2% |
| 1966 | 3,4% | 1990 | 2,4% | 2014 | 1,1% |
| 1967 | 3,5% | 1991 | 2,2% | 2015 | 1,1% |
| 1968 | 3,3% | 1992 | 2,2% | 2016 | 1,1% |
| 1969 | 3,2% | 1993 | 2% | 2017 | 1,1% |
| 1970 | 2,9% | 1994 | 1,9% | 2018 | 1,2% |
| 1971 | 2,8% | 1995 | 1,8% | 2019 | 1,3% |
| 1972 | 2,8% | 1996 | 1,7% | 2020 | 1,4% |
| 1973 | 2,7% | 1997 | 1,6% | 2021 | 1,4% |
| 1974 | 2,7% | 1998 | 1,6% | 2022 | 1,3% |
| 1975 | 2,8% | 1999 | 1,6% | 2023 | 1,4% |
| 1976 | 2,7% | 2000 | 1,4% | 2024 | 1,9% |
| 1977 | 3% | 2001 | 1,4% | 2025 | 2,2% |
| 1978 | 2,7% | 2002 | 1,4% | | |
| 1979 | 2,8% | 2003 | 1,4% | | |