Year | Value | 2022 | 49,284 | 2021 | 51,041 | 2020 | 54,165 | 2019 | 57,359 | 2018 | 60,133 | 2017 | 62,018 | 2016 | 62,570 | 2015 | 61,938 | 2014 | 60,280 | 2013 | 58,024 | 2012 | 55,909 | 2011 | 54,355 | 2010 | 53,964 | 2009 | 54,673 | 2008 | 55,776 | 2007 | 56,781 | 2006 | 57,555 | 2005 | 58,046 | 2004 | 58,109 | 2003 | 57,602 | 2002 | 56,355 | 2001 | 54,378 | 2000 | 51,592 | 1999 | 48,082 | 1998 | 44,232 | 1997 | 40,327 | 1996 | 37,032 | 1995 | 35,364 | 1994 | 35,687 | 1993 | 37,672 | 1992 | 41,021 | 1991 | 44,770 | 1990 | 47,676 | 1989 | 49,241 | 1988 | 49,496 | 1987 | 49,012 | 1986 | 48,358 | 1985 | 47,948 | 1984 | 47,701 | 1983 | 47,346 | 1982 | 46,928 | 1981 | 46,469 | 1980 | 45,996 | 1979 | 45,499 | 1978 | 44,794 | 1977 | 43,774 | 1976 | 42,611 | 1975 | 41,382 | 1974 | 40,040 | 1973 | 38,768 | 1972 | 37,703 | 1971 | 36,779 | 1970 | 36,124 | 1969 | 35,726 | 1968 | 35,400 | 1967 | 35,071 | 1966 | 34,627 | 1965 | 33,886 | 1964 | 32,856 | 1963 | 31,776 | 1962 | 30,845 | 1961 | 30,044 | 1960 | 29,303 |
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