Year | Value | 2022 | 25,955 | 2021 | 25,171 | 2020 | 24,387 | 2019 | 23,374 | 2018 | 22,278 | 2017 | 21,150 | 2016 | 20,076 | 2015 | 19,142 | 2014 | 18,346 | 2013 | 17,498 | 2012 | 16,585 | 2011 | 15,757 | 2010 | 14,950 | 2009 | 14,175 | 2008 | 13,678 | 2007 | 13,447 | 2006 | 13,278 | 2005 | 13,166 | 2004 | 13,112 | 2003 | 13,114 | 2002 | 13,147 | 2001 | 13,152 | 2000 | 13,097 | 1999 | 12,992 | 1998 | 12,854 | 1997 | 12,679 | 1996 | 12,468 | 1995 | 12,221 | 1994 | 11,921 | 1993 | 11,553 | 1992 | 11,154 | 1991 | 10,802 | 1990 | 10,547 | 1989 | 10,379 | 1988 | 10,294 | 1987 | 10,251 | 1986 | 10,137 | 1985 | 9,881 | 1984 | 9,514 | 1983 | 9,051 | 1982 | 8,499 | 1981 | 7,911 | 1980 | 7,316 | 1979 | 6,722 | 1978 | 6,156 | 1977 | 5,647 | 1976 | 5,193 | 1975 | 4,791 | 1974 | 4,443 | 1973 | 4,152 | 1972 | 3,951 | 1971 | 3,915 | 1970 | 4,006 | 1969 | 4,143 | 1968 | 4,314 | 1967 | 4,487 | 1966 | 4,600 | 1965 | 4,619 | 1964 | 4,533 | 1963 | 4,336 | 1962 | 4,079 | 1961 | 3,859 | 1960 | 3,741 |
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