Datentabelle
| 1970 | 104 Mio. | 1989 | 1,41 Mrd. | 2008 | 7,45 Mrd. |
| 1971 | 128 Mio. | 1990 | 1,8 Mrd. | 2009 | 7,54 Mrd. |
| 1972 | 150 Mio. | 1991 | 2,02 Mrd. | 2010 | 8,11 Mrd. |
| 1973 | 199 Mio. | 1992 | 2,33 Mrd. | 2011 | 8,92 Mrd. |
| 1974 | 226 Mio. | 1993 | 2,48 Mrd. | 2012 | 9,17 Mrd. |
| 1975 | 269 Mio. | 1994 | 2,8 Mrd. | 2013 | 9,35 Mrd. |
| 1976 | 306 Mio. | 1995 | 3,67 Mrd. | 2014 | 9,6 Mrd. |
| 1977 | 381 Mio. | 1996 | 4,1 Mrd. | 2015 | 9,38 Mrd. |
| 1978 | 419 Mio. | 1997 | 4,46 Mrd. | 2016 | 9,88 Mrd. |
| 1979 | 452 Mio. | 1998 | 4,47 Mrd. | 2017 | 10,2 Mrd. |
| 1980 | 560 Mio. | 1999 | 4,49 Mrd. | 2018 | 10,6 Mrd. |
| 1981 | 681 Mio. | 2000 | 4,33 Mrd. | 2019 | 10,4 Mrd. |
| 1982 | 738 Mio. | 2001 | 4,31 Mrd. | 2020 | 9,8 Mrd. |
| 1983 | 733 Mio. | 2002 | 4,53 Mrd. | 2021 | 11 Mrd. |
| 1984 | 919 Mio. | 2003 | 4,72 Mrd. | 2022 | 12 Mrd. |
| 1985 | 1,05 Mrd. | 2004 | 5,04 Mrd. | 2023 | 14 Mrd. |
| 1986 | 1,02 Mrd. | 2005 | 5,46 Mrd. | 2024 | 15,3 Mrd. |
| 1987 | 1,05 Mrd. | 2006 | 5,83 Mrd. | 2025 | 17,4 Mrd. |
| 1988 | 1,21 Mrd. | 2007 | 6,52 Mrd. | | |
Datentabelle
| 1970 | 5,4% | 1989 | 4,5% | 2008 | 3,9% |
| 1971 | 5,6% | 1990 | 4,6% | 2009 | 3,9% |
| 1972 | 5,1% | 1991 | 4,4% | 2010 | 3,4% |
| 1973 | 4,7% | 1992 | 4,5% | 2011 | 3,2% |
| 1974 | 4,3% | 1993 | 4,1% | 2012 | 3,1% |
| 1975 | 4,6% | 1994 | 3,8% | 2013 | 3% |
| 1976 | 5% | 1995 | 4,2% | 2014 | 3% |
| 1977 | 5,7% | 1996 | 4,3% | 2015 | 3% |
| 1978 | 5,2% | 1997 | 4,5% | 2016 | 3,1% |
| 1979 | 4,7% | 1998 | 5,2% | 2017 | 3% |
| 1980 | 4,6% | 1999 | 5,2% | 2018 | 2,8% |
| 1981 | 4,7% | 2000 | 4,5% | 2019 | 2,8% |
| 1982 | 4,7% | 2001 | 4,8% | 2020 | 2,8% |
| 1983 | 4,1% | 2002 | 4,9% | 2021 | 2,5% |
| 1984 | 4,7% | 2003 | 4,8% | 2022 | 2,4% |
| 1985 | 5,7% | 2004 | 4,4% | 2023 | 2,8% |
| 1986 | 5,4% | 2005 | 4,3% | 2024 | 2,8% |
| 1987 | 4,9% | 2006 | 3,9% | 2025 | 3% |
| 1988 | 4,5% | 2007 | 3,6% | | |