Year | Value | 2022 | 68,542 | 2021 | 67,922 | 2020 | 67,252 | 2019 | 67,048 | 2018 | 68,022 | 2017 | 69,887 | 2016 | 72,444 | 2015 | 75,608 | 2014 | 78,402 | 2013 | 80,193 | 2012 | 81,173 | 2011 | 81,196 | 2010 | 81,162 | 2009 | 81,596 | 2008 | 81,220 | 2007 | 80,102 | 2006 | 79,454 | 2005 | 78,781 | 2004 | 78,072 | 2003 | 78,145 | 2002 | 78,109 | 2001 | 77,447 | 2000 | 76,725 | 1999 | 75,804 | 1998 | 75,177 | 1997 | 75,799 | 1996 | 77,962 | 1995 | 81,398 | 1994 | 85,669 | 1993 | 90,234 | 1992 | 94,527 | 1991 | 96,963 | 1990 | 96,932 | 1989 | 95,179 | 1988 | 92,147 | 1987 | 89,150 | 1986 | 87,305 | 1985 | 87,051 | 1984 | 88,309 | 1983 | 90,419 | 1982 | 92,609 | 1981 | 94,612 | 1980 | 96,332 | 1979 | 97,391 | 1978 | 97,390 | 1977 | 95,964 | 1976 | 92,779 | 1975 | 87,804 | 1974 | 81,682 | 1973 | 74,925 | 1972 | 68,128 | 1971 | 62,694 | 1970 | 60,076 | 1969 | 60,491 | 1968 | 63,256 | 1967 | 67,625 | 1966 | 72,529 | 1965 | 76,455 | 1964 | 78,540 | 1963 | 79,095 | 1962 | 78,740 | 1961 | 78,120 | 1960 | 77,393 |
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