| Year | Value | | 2024 | 343 | | 2023 | 315 | | 2022 | 289 | | 2021 | 268 | | 2020 | 247 | | 2019 | 234 | | 2018 | 228 | | 2017 | 225 | | 2016 | 221 | | 2015 | 217 | | 2014 | 209 | | 2013 | 191 | | 2012 | 175 | | 2011 | 170 | | 2010 | 158 | | 2009 | 143 | | 2008 | 135 | | 2007 | 125 | | 2006 | 116 | | 2005 | 104 | | 2004 | 97 | | 2003 | 96 | | 2002 | 94 | | 2001 | 91 | | 2000 | 87 | | 1999 | 89 | | 1998 | 94 | | 1997 | 96 | | 1996 | 97 | | 1995 | 93 | | 1994 | 91 | | 1993 | 96 | | 1992 | 98 | | 1991 | 97 | | 1990 | 94 | | 1989 | 92 | | 1988 | 90 | | 1987 | 86 | | 1986 | 83 | | 1985 | 81 | | 1984 | 79 | | 1983 | 78 | | 1982 | 78 | | 1981 | 77 | | 1980 | 75 | | 1979 | 72 | | 1978 | 69 | | 1977 | 65 | | 1976 | 61 | | 1975 | 55 |
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