Year | Value | 2023 | 1,587 | 2022 | 1,610 | 2021 | 1,607 | 2020 | 1,583 | 2019 | 1,542 | 2018 | 1,486 | 2017 | 1,435 | 2016 | 1,395 | 2015 | 1,337 | 2014 | 1,288 | 2013 | 1,256 | 2012 | 1,210 | 2011 | 1,204 | 2010 | 1,228 | 2009 | 1,232 | 2008 | 1,212 | 2007 | 1,179 | 2006 | 1,135 | 2005 | 1,087 | 2004 | 1,050 | 2003 | 1,025 | 2002 | 1,014 | 2001 | 1,025 | 2000 | 1,043 | 1999 | 1,043 | 1998 | 1,016 | 1997 | 969 | 1996 | 914 | 1995 | 857 | 1994 | 802 | 1993 | 750 | 1992 | 698 | 1991 | 647 | 1990 | 602 | 1989 | 568 | 1988 | 537 | 1987 | 499 | 1986 | 458 | 1985 | 418 | 1984 | 376 | 1983 | 341 | 1982 | 313 | 1981 | 280 | 1980 | 248 | 1979 | 230 | 1978 | 212 | 1977 | 196 | 1976 | 186 | 1975 | 175 | 1974 | 162 |
|