Year | Value | 2022 | 35,919 | 2021 | 35,736 | 2020 | 35,625 | 2019 | 35,823 | 2018 | 36,217 | 2017 | 36,581 | 2016 | 36,938 | 2015 | 37,169 | 2014 | 37,121 | 2013 | 36,830 | 2012 | 36,304 | 2011 | 35,545 | 2010 | 34,551 | 2009 | 33,296 | 2008 | 31,954 | 2007 | 30,733 | 2006 | 29,762 | 2005 | 29,145 | 2004 | 28,937 | 2003 | 29,004 | 2002 | 29,089 | 2001 | 29,141 | 2000 | 29,201 | 1999 | 29,274 | 1998 | 29,391 | 1997 | 29,571 | 1996 | 29,702 | 1995 | 29,870 | 1994 | 30,116 | 1993 | 30,221 | 1992 | 30,137 | 1991 | 30,023 | 1990 | 29,711 | 1989 | 29,039 | 1988 | 28,173 | 1987 | 27,159 | 1986 | 26,031 | 1985 | 24,717 | 1984 | 23,508 | 1983 | 22,635 | 1982 | 21,914 | 1981 | 21,368 | 1980 | 20,965 | 1979 | 20,360 | 1978 | 19,567 | 1977 | 18,902 | 1976 | 18,366 | 1975 | 17,949 | 1974 | 17,673 | 1973 | 17,416 | 1972 | 17,070 | 1971 | 16,635 | 1970 | 16,158 | 1969 | 15,655 | 1968 | 15,120 | 1967 | 14,554 | 1966 | 13,991 | 1965 | 13,426 | 1964 | 12,853 | 1963 | 12,320 | 1962 | 11,833 | 1961 | 11,378 | 1960 | 10,950 |
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