Datentabelle
| 1962 | 250 Mio. | 1984 | 3,74 Mrd. | 2006 | 2,95 Mrd. |
| 1963 | 336 Mio. | 1985 | 4,2 Mrd. | 2007 | 3,31 Mrd. |
| 1964 | 448 Mio. | 1986 | 4,73 Mrd. | 2008 | 3,78 Mrd. |
| 1965 | 515 Mio. | 1987 | 4,81 Mrd. | 2009 | 4,02 Mrd. |
| 1966 | 482 Mio. | 1988 | 4,45 Mrd. | 2010 | 4,41 Mrd. |
| 1967 | 508 Mio. | 1989 | 3,52 Mrd. | 2011 | 4,46 Mrd. |
| 1968 | 649 Mio. | 1990 | 2,26 Mrd. | 2012 | 4,56 Mrd. |
| 1969 | 889 Mio. | 1991 | 1,35 Mrd. | 2013 | 4,36 Mrd. |
| 1970 | 1,09 Mrd. | 1992 | 1,42 Mrd. | 2014 | 5,09 Mrd. |
| 1971 | 1,27 Mrd. | 1993 | 1,53 Mrd. | 2015 | 5,48 Mrd. |
| 1972 | 1,07 Mrd. | 1994 | 1,71 Mrd. | 2016 | 4,51 Mrd. |
| 1973 | 1,24 Mrd. | 1995 | 1,95 Mrd. | 2017 | 2,77 Mrd. |
| 1974 | 1,85 Mrd. | 1996 | 2,12 Mrd. | 2018 | 3,12 Mrd. |
| 1975 | 1,93 Mrd. | 1997 | 2,27 Mrd. | 2019 | 3,74 Mrd. |
| 1976 | 2,2 Mrd. | 1998 | 2,37 Mrd. | 2020 | 4,51 Mrd. |
| 1977 | 2,75 Mrd. | 1999 | 2,45 Mrd. | 2021 | 5,17 Mrd. |
| 1978 | 2,49 Mrd. | 2000 | 2,63 Mrd. | 2022 | 4,65 Mrd. |
| 1979 | 1,15 Mrd. | 2001 | 2,83 Mrd. | 2023 | 3,17 Mrd. |
| 1980 | 1,36 Mrd. | 2002 | 2,9 Mrd. | 2024 | 2,4 Mrd. |
| 1981 | 1,82 Mrd. | 2003 | 2,38 Mrd. | 2025 | 2,5 Mrd. |
| 1982 | 2,31 Mrd. | 2004 | 2,37 Mrd. | | |
| 1983 | 3 Mrd. | 2005 | 2,66 Mrd. | | |
Datentabelle
| 1962 | 6,7% | 1984 | 8,3% | 2006 | 2,6% |
| 1963 | 8,7% | 1985 | 7,9% | 2007 | 2,4% |
| 1964 | 10,3% | 1986 | 7,5% | 2008 | 2,2% |
| 1965 | 10,1% | 1987 | 6,5% | 2009 | 2% |
| 1966 | 8,7% | 1988 | 5,1% | 2010 | 2% |
| 1967 | 8,9% | 1989 | 4% | 2011 | 1,8% |
| 1968 | 11,1% | 1990 | 3,5% | 2012 | 1,6% |
| 1969 | 14,3% | 1991 | 3,6% | 2013 | 1,6% |
| 1970 | 16% | 1992 | 3,2% | 2014 | 1,7% |
| 1971 | 17,2% | 1993 | 3,1% | 2015 | 1,7% |
| 1972 | 13,6% | 1994 | 3,2% | 2016 | 1,7% |
| 1973 | 13,5% | 1995 | 3,1% | 2017 | 1,4% |
| 1974 | 17,3% | 1996 | 3% | 2018 | 1,2% |
| 1975 | 15,4% | 1997 | 2,8% | 2019 | 1,2% |
| 1976 | 13,7% | 1998 | 2,7% | 2020 | 1,1% |
| 1977 | 13,1% | 1999 | 2,6% | 2021 | 1,1% |
| 1978 | 9,9% | 2000 | 2,6% | 2022 | 1% |
| 1979 | 6,5% | 2001 | 3% | 2023 | 0,8% |
| 1980 | 6,2% | 2002 | 3,3% | 2024 | 0,7% |
| 1981 | 7,4% | 2003 | 3,2% | 2025 | 0,6% |
| 1982 | 7,2% | 2004 | 2,9% | | |
| 1983 | 8% | 2005 | 2,7% | | |