Year | Value | 2022 | 68,949 | 2021 | 67,295 | 2020 | 66,114 | 2019 | 64,965 | 2018 | 63,214 | 2017 | 62,044 | 2016 | 62,203 | 2015 | 62,981 | 2014 | 64,127 | 2013 | 65,629 | 2012 | 67,337 | 2011 | 69,264 | 2010 | 71,360 | 2009 | 73,326 | 2008 | 74,646 | 2007 | 74,874 | 2006 | 74,491 | 2005 | 74,123 | 2004 | 74,334 | 2003 | 75,646 | 2002 | 77,754 | 2001 | 80,462 | 2000 | 83,518 | 1999 | 85,934 | 1998 | 87,438 | 1997 | 88,544 | 1996 | 89,048 | 1995 | 89,281 | 1994 | 89,862 | 1993 | 90,194 | 1992 | 90,533 | 1991 | 90,853 | 1990 | 90,468 | 1989 | 89,872 | 1988 | 89,363 | 1987 | 88,282 | 1986 | 86,071 | 1985 | 83,151 | 1984 | 80,087 | 1983 | 77,778 | 1982 | 77,306 | 1981 | 79,283 | 1980 | 83,289 | 1979 | 88,175 | 1978 | 92,810 | 1977 | 96,041 | 1976 | 97,207 | 1975 | 96,422 | 1974 | 94,031 | 1973 | 90,852 | 1972 | 88,323 | 1971 | 87,193 | 1970 | 87,390 | 1969 | 88,458 | 1968 | 89,527 | 1967 | 89,507 | 1966 | 87,613 | 1965 | 83,600 | 1964 | 77,998 | 1963 | 71,727 | 1962 | 65,512 | 1961 | 60,127 | 1960 | 55,786 |
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