Year | Value | 2022 | 37,445 | 2021 | 37,179 | 2020 | 36,757 | 2019 | 36,389 | 2018 | 36,070 | 2017 | 35,664 | 2016 | 34,962 | 2015 | 34,012 | 2014 | 33,034 | 2013 | 31,991 | 2012 | 30,871 | 2011 | 29,715 | 2010 | 28,583 | 2009 | 27,531 | 2008 | 26,605 | 2007 | 25,814 | 2006 | 25,116 | 2005 | 24,438 | 2004 | 23,748 | 2003 | 22,902 | 2002 | 22,263 | 2001 | 22,031 | 2000 | 21,910 | 1999 | 21,902 | 1998 | 21,595 | 1997 | 20,964 | 1996 | 20,365 | 1995 | 19,783 | 1994 | 19,220 | 1993 | 18,680 | 1992 | 18,132 | 1991 | 17,540 | 1990 | 16,893 | 1989 | 16,208 | 1988 | 15,550 | 1987 | 14,972 | 1986 | 14,470 | 1985 | 14,039 | 1984 | 13,679 | 1983 | 13,379 | 1982 | 13,119 | 1981 | 12,819 | 1980 | 12,447 | 1979 | 12,074 | 1978 | 11,703 | 1977 | 11,276 | 1976 | 10,778 | 1975 | 10,243 | 1974 | 9,646 | 1973 | 9,005 | 1972 | 8,460 | 1971 | 8,070 | 1970 | 7,807 | 1969 | 7,710 | 1968 | 7,771 | 1967 | 7,859 | 1966 | 7,935 | 1965 | 8,009 | 1964 | 8,071 | 1963 | 8,124 | 1962 | 8,159 | 1961 | 8,163 | 1960 | 8,123 |
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