Year | Value | 2023 | 1,987 | 2022 | 1,982 | 2021 | 1,952 | 2020 | 1,896 | 2019 | 1,818 | 2018 | 1,743 | 2017 | 1,693 | 2016 | 1,653 | 2015 | 1,604 | 2014 | 1,545 | 2013 | 1,467 | 2012 | 1,376 | 2011 | 1,293 | 2010 | 1,234 | 2009 | 1,196 | 2008 | 1,157 | 2007 | 1,113 | 2006 | 1,062 | 2005 | 1,003 | 2004 | 933 | 2003 | 862 | 2002 | 794 | 2001 | 728 | 2000 | 662 | 1999 | 607 | 1998 | 561 | 1997 | 521 | 1996 | 482 | 1995 | 441 | 1994 | 402 | 1993 | 369 | 1992 | 343 | 1991 | 322 | 1990 | 306 | 1989 | 287 | 1988 | 262 | 1987 | 243 | 1986 | 228 | 1985 | 213 | 1984 | 198 | 1983 | 189 | 1982 | 179 | 1981 | 166 | 1980 | 152 | 1979 | 146 | 1978 | 146 | 1977 | 149 | 1976 | 158 | 1975 | 168 | 1974 | 175 |
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