Tabel data
| 1980 | 2.056 | 1996 | 2.976 | 2012 | 5.022 |
| 1981 | 2.062 | 1997 | 2.900 | 2013 | 5.277 |
| 1982 | 1.942 | 1998 | 2.270 | 2014 | 5.622 |
| 1983 | 1.781 | 1999 | 2.639 | 2015 | 5.397 |
| 1984 | 1.829 | 2000 | 2.275 | 2016 | 5.658 |
| 1985 | 1.744 | 2001 | 2.234 | 2017 | 6.050 |
| 1986 | 1.954 | 2002 | 2.463 | 2018 | 6.270 |
| 1987 | 1.777 | 2003 | 3.073 | 2019 | 5.968 |
| 1988 | 1.672 | 2004 | 3.597 | 2020 | 4.693 |
| 1989 | 1.747 | 2005 | 3.940 | 2021 | 4.589 |
| 1990 | 1.959 | 2006 | 4.051 | 2022 | 5.460 |
| 1991 | 2.012 | 2007 | 4.405 | 2023 | 5.971 |
| 1992 | 2.209 | 2008 | 4.554 | 2024 | 6.468 |
| 1993 | 2.340 | 2009 | 3.682 | 2025 | 6.508 |
| 1994 | 2.591 | 2010 | 4.011 | 2026 | 6.802 |
| 1995 | 2.780 | 2011 | 4.803 | | |
Tabel data
| 1980 | 1.682 | 1996 | 4.176 | 2012 | 8.989 |
| 1981 | 1.762 | 1997 | 4.187 | 2013 | 9.718 |
| 1982 | 1.811 | 1998 | 4.510 | 2014 | 10.611 |
| 1983 | 1.811 | 1999 | 5.197 | 2015 | 11.321 |
| 1984 | 1.980 | 2000 | 4.842 | 2016 | 11.852 |
| 1985 | 2.012 | 2001 | 5.087 | 2017 | 12.504 |
| 1986 | 2.214 | 2002 | 5.387 | 2018 | 13.088 |
| 1987 | 2.210 | 2003 | 5.826 | 2019 | 12.894 |
| 1988 | 2.392 | 2004 | 6.233 | 2020 | 10.178 |
| 1989 | 2.592 | 2005 | 6.663 | 2021 | 9.502 |
| 1990 | 2.901 | 2006 | 7.013 | 2022 | 12.019 |
| 1991 | 2.968 | 2007 | 7.094 | 2023 | 13.435 |
| 1992 | 3.320 | 2008 | 7.259 | 2024 | 14.671 |
| 1993 | 3.607 | 2009 | 7.211 | 2025 | 14.838 |
| 1994 | 3.793 | 2010 | 7.695 | 2026 | 15.441 |
| 1995 | 3.910 | 2011 | 8.601 | | |
Tabel data
| 1980 | 6.625 | 1996 | 8.509 | 2012 | 9.674 |
| 1981 | 6.856 | 1997 | 8.230 | 2013 | 10.093 |
| 1982 | 6.608 | 1998 | 8.247 | 2014 | 10.611 |
| 1983 | 6.173 | 1999 | 8.889 | 2015 | 11.042 |
| 1984 | 6.654 | 2000 | 8.687 | 2016 | 11.263 |
| 1985 | 6.303 | 2001 | 8.821 | 2017 | 11.684 |
| 1986 | 6.658 | 2002 | 9.041 | 2018 | 12.057 |
| 1987 | 6.154 | 2003 | 9.046 | 2019 | 12.894 |
| 1988 | 6.360 | 2004 | 9.476 | 2020 | 10.618 |
| 1989 | 7.102 | 2005 | 9.294 | 2021 | 10.095 |
| 1990 | 7.453 | 2006 | 9.436 | 2022 | 11.815 |
| 1991 | 7.194 | 2007 | 9.266 | 2023 | 12.854 |
| 1992 | 7.572 | 2008 | 9.351 | 2024 | 13.230 |
| 1993 | 7.707 | 2009 | 9.161 | 2025 | 13.571 |
| 1994 | 8.037 | 2010 | 9.384 | 2026 | 13.818 |
| 1995 | 8.196 | 2011 | 9.587 | | |