Datentabelle
| 1951 | 64,7 Mio. | 1976 | 1,68 Mrd. | 2001 | 1,8 Mrd. |
| 1952 | 74,5 Mio. | 1977 | 2,07 Mrd. | 2002 | 1,77 Mrd. |
| 1953 | 65,8 Mio. | 1978 | 2,07 Mrd. | 2003 | 2,57 Mrd. |
| 1954 | 63 Mio. | 1979 | 2,16 Mrd. | 2004 | 3,1 Mrd. |
| 1955 | 67,2 Mio. | 1980 | 2,66 Mrd. | 2005 | 3,57 Mrd. |
| 1956 | 77 Mio. | 1981 | 3,01 Mrd. | 2006 | 3,51 Mrd. |
| 1957 | 81,9 Mio. | 1982 | 2,74 Mrd. | 2007 | 3,53 Mrd. |
| 1958 | 63,7 Mio. | 1983 | 3,05 Mrd. | 2008 | 3,29 Mrd. |
| 1959 | 60,5 Mio. | 1984 | 2,77 Mrd. | 2009 | 3,59 Mrd. |
| 1960 | 70 Mio. | 1985 | 2,12 Mrd. | 2010 | 4,19 Mrd. |
| 1961 | 114 Mio. | 1986 | 2,5 Mrd. | 2011 | 4,59 Mrd. |
| 1962 | 186 Mio. | 1987 | 3,6 Mrd. | 2012 | 4,49 Mrd. |
| 1963 | 189 Mio. | 1988 | 4,26 Mrd. | 2013 | 4,12 Mrd. |
| 1964 | 272 Mio. | 1989 | 4,18 Mrd. | 2014 | 3,89 Mrd. |
| 1965 | 289 Mio. | 1990 | 4,36 Mrd. | 2015 | 3,49 Mrd. |
| 1966 | 324 Mio. | 1991 | 3,87 Mrd. | 2016 | 3,14 Mrd. |
| 1967 | 373 Mio. | 1992 | 3,68 Mrd. | 2017 | 3,6 Mrd. |
| 1968 | 400 Mio. | 1993 | 3,25 Mrd. | 2018 | 3,63 Mrd. |
| 1969 | 426 Mio. | 1994 | 3,48 Mrd. | 2019 | 3,44 Mrd. |
| 1970 | 418 Mio. | 1995 | 3,29 Mrd. | 2020 | 3,23 Mrd. |
| 1971 | 486 Mio. | 1996 | 2,59 Mrd. | 2021 | 3,55 Mrd. |
| 1972 | 492 Mio. | 1997 | 2,41 Mrd. | 2022 | 3,46 Mrd. |
| 1973 | 753 Mio. | 1998 | 1,91 Mrd. | 2023 | 3,06 Mrd. |
| 1974 | 1,1 Mrd. | 1999 | 1,74 Mrd. | 2024 | 3,03 Mrd. |
| 1975 | 1,43 Mrd. | 2000 | 1,89 Mrd. | 2025 | 3,17 Mrd. |
Datentabelle
| 1951 | 1,6% | 1976 | 4,7% | 2001 | 1,5% |
| 1952 | 1,7% | 1977 | 5,3% | 2002 | 1,5% |
| 1953 | 1,4% | 1978 | 4,6% | 2003 | 1,5% |
| 1954 | 1,2% | 1979 | 3,9% | 2004 | 1,4% |
| 1955 | 1,2% | 1980 | 3,3% | 2005 | 1,2% |
| 1956 | 1,3% | 1981 | 3,6% | 2006 | 1,2% |
| 1957 | 1,3% | 1982 | 3,6% | 2007 | 1,1% |
| 1958 | 1% | 1983 | 3,6% | 2008 | 1% |
| 1959 | 0,9% | 1984 | 3,7% | 2009 | 1,1% |
| 1960 | 1% | 1985 | 3,7% | 2010 | 1% |
| 1961 | 1,5% | 1986 | 3,8% | 2011 | 1% |
| 1962 | 2,3% | 1987 | 4,2% | 2012 | 1% |
| 1963 | 2,1% | 1988 | 4,6% | 2013 | 1% |
| 1964 | 2,7% | 1989 | 4,4% | 2014 | 1% |
| 1965 | 2,6% | 1990 | 3,9% | 2015 | 1% |
| 1966 | 2,7% | 1991 | 3,2% | 2016 | 1% |
| 1967 | 2,8% | 1992 | 2,8% | 2017 | 0,9% |
| 1968 | 2,8% | 1993 | 2,5% | 2018 | 0,9% |
| 1969 | 2,6% | 1994 | 2,6% | 2019 | 0,9% |
| 1970 | 2,3% | 1995 | 2,1% | 2020 | 1% |
| 1971 | 2,5% | 1996 | 1,8% | 2021 | 0,8% |
| 1972 | 2,4% | 1997 | 1,6% | 2022 | 0,8% |
| 1973 | 2,6% | 1998 | 1,4% | 2023 | 0,8% |
| 1974 | 3,1% | 1999 | 1,3% | 2024 | 0,8% |
| 1975 | 3,9% | 2000 | 1,4% | 2025 | 0,7% |