Year | Value | 2022 | 77,440 | 2021 | 77,030 | 2020 | 76,019 | 2019 | 74,996 | 2018 | 74,336 | 2017 | 73,972 | 2016 | 74,380 | 2015 | 75,413 | 2014 | 76,149 | 2013 | 76,756 | 2012 | 77,503 | 2011 | 77,186 | 2010 | 76,165 | 2009 | 74,667 | 2008 | 71,787 | 2007 | 68,894 | 2006 | 65,489 | 2005 | 60,640 | 2004 | 55,845 | 2003 | 53,448 | 2002 | 52,172 | 2001 | 51,606 | 2000 | 52,818 | 1999 | 54,310 | 1998 | 54,278 | 1997 | 53,680 | 1996 | 53,251 | 1995 | 52,961 | 1994 | 52,695 | 1993 | 52,733 | 1992 | 52,931 | 1991 | 53,018 | 1990 | 53,407 | 1989 | 53,816 | 1988 | 53,777 | 1987 | 53,121 | 1986 | 51,060 | 1985 | 48,012 | 1984 | 45,221 | 1983 | 42,844 | 1982 | 40,753 | 1981 | 39,368 | 1980 | 38,238 | 1979 | 36,554 | 1978 | 33,664 | 1977 | 29,870 | 1976 | 26,368 | 1975 | 23,979 | 1974 | 24,142 | 1973 | 27,094 | 1972 | 31,401 | 1971 | 35,814 | 1970 | 39,511 | 1969 | 41,614 | 1968 | 42,312 | 1967 | 42,313 | 1966 | 41,991 | 1965 | 41,420 | 1964 | 40,551 | 1963 | 39,825 | 1962 | 39,514 | 1961 | 39,606 | 1960 | 39,557 |
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