Datentabelle
| 1971 | 29,1 Mio. | 1990 | 1,45 Mrd. | 2009 | 3,37 Mrd. |
| 1972 | 54,5 Mio. | 1991 | 1,25 Mrd. | 2010 | 3,67 Mrd. |
| 1973 | 89,8 Mio. | 1992 | 1,52 Mrd. | 2011 | 5 Mrd. |
| 1974 | 256 Mio. | 1993 | 1,44 Mrd. | 2012 | 9,25 Mrd. |
| 1975 | 523 Mio. | 1994 | 1,52 Mrd. | 2013 | 8,77 Mrd. |
| 1976 | 589 Mio. | 1995 | 1,51 Mrd. | 2014 | 8,21 Mrd. |
| 1977 | 515 Mio. | 1996 | 1,44 Mrd. | 2015 | 7,53 Mrd. |
| 1978 | 574 Mio. | 1997 | 1,48 Mrd. | 2016 | 7,94 Mrd. |
| 1979 | 584 Mio. | 1998 | 1,32 Mrd. | 2017 | 6,8 Mrd. |
| 1980 | 884 Mio. | 1999 | 1,34 Mrd. | 2018 | 7,57 Mrd. |
| 1981 | 1,13 Mrd. | 2000 | 1,58 Mrd. | 2019 | 6,55 Mrd. |
| 1982 | 1,26 Mrd. | 2001 | 1,82 Mrd. | 2020 | 6,1 Mrd. |
| 1983 | 1,46 Mrd. | 2002 | 1,87 Mrd. | 2021 | 5,78 Mrd. |
| 1984 | 1,58 Mrd. | 2003 | 1,97 Mrd. | 2022 | 5,78 Mrd. |
| 1985 | 1,62 Mrd. | 2004 | 2,23 Mrd. | 2023 | 5,85 Mrd. |
| 1986 | 1,31 Mrd. | 2005 | 2,74 Mrd. | 2024 | 5,99 Mrd. |
| 1987 | 1,14 Mrd. | 2006 | 3,02 Mrd. | 2025 | 5,99 Mrd. |
| 1988 | 1,15 Mrd. | 2007 | 3,24 Mrd. | | |
| 1989 | 1,17 Mrd. | 2008 | 3,46 Mrd. | | |
Datentabelle
| 1971 | 9,7% | 1990 | 12,4% | 2009 | 6,1% |
| 1972 | 14,9% | 1991 | 11,1% | 2010 | 5,6% |
| 1973 | 18,6% | 1992 | 12,2% | 2011 | 6,5% |
| 1974 | 15,5% | 1993 | 11,5% | 2012 | 10,6% |
| 1975 | 25% | 1994 | 11,8% | 2013 | 9,7% |
| 1976 | 23% | 1995 | 11% | 2014 | 8,9% |
| 1977 | 18,8% | 1996 | 9,4% | 2015 | 9,6% |
| 1978 | 20,9% | 1997 | 9,4% | 2016 | 10,6% |
| 1979 | 15,6% | 1998 | 8,2% | 2017 | 8,4% |
| 1980 | 14,9% | 1999 | 7,5% | 2018 | 8,3% |
| 1981 | 15,7% | 2000 | 7,1% | 2019 | 7,4% |
| 1982 | 16,7% | 2001 | 8,2% | 2020 | 8% |
| 1983 | 17,2% | 2002 | 8,1% | 2021 | 6,6% |
| 1984 | 16,9% | 2003 | 8% | 2022 | 5,3% |
| 1985 | 15,6% | 2004 | 7,9% | 2023 | 5,5% |
| 1986 | 15,9% | 2005 | 7,7% | 2024 | 5,6% |
| 1987 | 13,2% | 2006 | 7,1% | 2025 | 5,7% |
| 1988 | 13,7% | 2007 | 6,7% | | |
| 1989 | 12,5% | 2008 | 5% | | |