Year | Value | 2022 | 44,537 | 2021 | 47,311 | 2020 | 50,562 | 2019 | 53,806 | 2018 | 56,767 | 2017 | 59,202 | 2016 | 60,813 | 2015 | 61,487 | 2014 | 61,321 | 2013 | 60,478 | 2012 | 59,122 | 2011 | 57,369 | 2010 | 55,037 | 2009 | 52,581 | 2008 | 50,643 | 2007 | 49,106 | 2006 | 47,754 | 2005 | 46,388 | 2004 | 44,922 | 2003 | 43,370 | 2002 | 41,813 | 2001 | 40,133 | 2000 | 38,668 | 1999 | 37,979 | 1998 | 37,945 | 1997 | 38,206 | 1996 | 38,429 | 1995 | 38,416 | 1994 | 38,113 | 1993 | 37,587 | 1992 | 36,801 | 1991 | 36,039 | 1990 | 35,741 | 1989 | 35,866 | 1988 | 36,200 | 1987 | 36,471 | 1986 | 36,432 | 1985 | 35,977 | 1984 | 35,134 | 1983 | 34,007 | 1982 | 32,695 | 1981 | 31,328 | 1980 | 30,036 | 1979 | 28,841 | 1978 | 27,766 | 1977 | 26,882 | 1976 | 26,198 | 1975 | 25,881 | 1974 | 26,272 | 1973 | 26,256 | 1972 | 25,126 | 1971 | 23,610 | 1970 | 22,118 | 1969 | 21,028 | 1968 | 20,536 | 1967 | 20,616 | 1966 | 21,006 | 1965 | 21,326 | 1964 | 21,311 | 1963 | 20,866 | 1962 | 20,067 | 1961 | 19,162 | 1960 | 18,610 |
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