Year | Value | 2023 | 1,948 | 2022 | 1,942 | 2021 | 1,911 | 2020 | 1,863 | 2019 | 1,797 | 2018 | 1,726 | 2017 | 1,675 | 2016 | 1,634 | 2015 | 1,582 | 2014 | 1,520 | 2013 | 1,454 | 2012 | 1,381 | 2011 | 1,309 | 2010 | 1,255 | 2009 | 1,219 | 2008 | 1,178 | 2007 | 1,125 | 2006 | 1,064 | 2005 | 999 | 2004 | 927 | 2003 | 851 | 2002 | 779 | 2001 | 716 | 2000 | 653 | 1999 | 600 | 1998 | 561 | 1997 | 530 | 1996 | 494 | 1995 | 452 | 1994 | 412 | 1993 | 375 | 1992 | 342 | 1991 | 318 | 1990 | 302 | 1989 | 283 | 1988 | 263 | 1987 | 248 | 1986 | 234 | 1985 | 220 | 1984 | 206 | 1983 | 194 | 1982 | 181 | 1981 | 172 | 1980 | 163 | 1979 | 158 | 1978 | 157 | 1977 | 155 | 1976 | 158 | 1975 | 166 | 1974 | 173 |
|