Year | Value | 2022 | 42,472 | 2021 | 42,753 | 2020 | 43,182 | 2019 | 42,947 | 2018 | 42,244 | 2017 | 41,597 | 2016 | 41,028 | 2015 | 40,556 | 2014 | 40,184 | 2013 | 40,263 | 2012 | 40,888 | 2011 | 41,880 | 2010 | 41,661 | 2009 | 39,996 | 2008 | 38,307 | 2007 | 36,595 | 2006 | 34,873 | 2005 | 33,184 | 2004 | 31,568 | 2003 | 30,059 | 2002 | 28,683 | 2001 | 28,388 | 2000 | 29,243 | 1999 | 30,367 | 1998 | 31,143 | 1997 | 30,775 | 1996 | 29,649 | 1995 | 28,365 | 1994 | 26,950 | 1993 | 25,399 | 1992 | 23,711 | 1991 | 21,868 | 1990 | 19,831 | 1989 | 17,614 | 1988 | 14,419 | 1987 | 11,752 | 1986 | 11,214 | 1985 | 11,404 | 1984 | 11,655 | 1983 | 11,944 | 1982 | 12,240 | 1981 | 12,497 | 1980 | 12,658 | 1979 | 12,614 | 1978 | 12,206 | 1977 | 11,281 | 1976 | 9,735 | 1975 | 8,545 | 1974 | 8,031 | 1973 | 7,513 | 1972 | 6,990 | 1971 | 6,484 | 1970 | 6,026 | 1969 | 5,637 | 1968 | 5,313 | 1967 | 5,028 | 1966 | 4,756 | 1965 | 4,487 | 1964 | 4,223 | 1963 | 3,958 | 1962 | 3,686 | 1961 | 3,419 | 1960 | 3,171 |
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