Year | Value | 2022 | 42,694 | 2021 | 42,733 | 2020 | 42,391 | 2019 | 40,867 | 2018 | 39,120 | 2017 | 37,541 | 2016 | 36,274 | 2015 | 35,822 | 2014 | 34,674 | 2013 | 32,799 | 2012 | 31,382 | 2011 | 28,923 | 2010 | 26,819 | 2009 | 25,859 | 2008 | 23,942 | 2007 | 23,859 | 2006 | 24,493 | 2005 | 22,673 | 2004 | 21,051 | 2003 | 19,924 | 2002 | 18,211 | 2001 | 16,848 | 2000 | 16,528 | 1999 | 16,102 | 1998 | 15,296 | 1997 | 14,572 | 1996 | 13,856 | 1995 | 13,144 | 1994 | 12,236 | 1993 | 10,959 | 1992 | 9,336 | 1991 | 8,272 | 1990 | 8,247 | 1989 | 8,276 | 1988 | 8,123 | 1987 | 8,244 | 1986 | 8,579 | 1985 | 8,961 | 1984 | 9,132 | 1983 | 9,166 | 1982 | 9,487 | 1981 | 10,671 | 1980 | 12,116 | 1979 | 12,791 | 1978 | 12,910 | 1977 | 12,780 | 1976 | 12,591 | 1975 | 12,356 | 1974 | 12,080 | 1973 | 11,770 | 1972 | 11,434 | 1971 | 11,108 | 1970 | 10,805 | 1969 | 10,516 | 1968 | 10,238 | 1967 | 9,968 | 1966 | 9,703 | 1965 | 9,438 | 1964 | 9,171 | 1963 | 8,902 | 1962 | 8,632 | 1961 | 8,360 | 1960 | 8,092 |
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