Year | Value | 2022 | 49,551 | 2021 | 49,481 | 2020 | 49,587 | 2019 | 49,858 | 2018 | 50,304 | 2017 | 50,729 | 2016 | 51,133 | 2015 | 51,514 | 2014 | 51,856 | 2013 | 52,141 | 2012 | 52,359 | 2011 | 52,520 | 2010 | 54,087 | 2009 | 57,056 | 2008 | 60,032 | 2007 | 63,050 | 2006 | 66,060 | 2005 | 69,025 | 2004 | 71,898 | 2003 | 74,623 | 2002 | 77,162 | 2001 | 79,479 | 2000 | 80,338 | 1999 | 76,237 | 1998 | 68,501 | 1997 | 60,817 | 1996 | 53,367 | 1995 | 48,717 | 1994 | 47,780 | 1993 | 47,948 | 1992 | 48,128 | 1991 | 48,302 | 1990 | 48,002 | 1989 | 45,859 | 1988 | 42,381 | 1987 | 38,923 | 1986 | 35,459 | 1985 | 32,041 | 1984 | 28,735 | 1983 | 25,594 | 1982 | 22,647 | 1981 | 19,902 | 1980 | 17,613 | 1979 | 16,494 | 1978 | 16,194 | 1977 | 15,901 | 1976 | 15,595 | 1975 | 15,269 | 1974 | 14,905 | 1973 | 14,094 | 1972 | 12,730 | 1971 | 11,279 | 1970 | 10,143 | 1969 | 9,952 | 1968 | 10,440 | 1967 | 10,720 | 1966 | 10,577 | 1965 | 10,229 | 1964 | 9,890 | 1963 | 9,561 | 1962 | 9,252 | 1961 | 8,965 | 1960 | 8,702 |
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