Year | Value | 2022 | 70,638 | 2021 | 68,775 | 2020 | 67,655 | 2019 | 66,516 | 2018 | 65,242 | 2017 | 64,157 | 2016 | 62,328 | 2015 | 59,185 | 2014 | 55,776 | 2013 | 52,553 | 2012 | 49,252 | 2011 | 46,580 | 2010 | 44,429 | 2009 | 42,029 | 2008 | 39,939 | 2007 | 38,927 | 2006 | 38,383 | 2005 | 38,204 | 2004 | 38,999 | 2003 | 39,986 | 2002 | 40,181 | 2001 | 39,765 | 2000 | 38,785 | 1999 | 37,320 | 1998 | 35,460 | 1997 | 33,429 | 1996 | 31,587 | 1995 | 30,208 | 1994 | 29,419 | 1993 | 29,353 | 1992 | 29,839 | 1991 | 30,282 | 1990 | 30,291 | 1989 | 29,899 | 1988 | 29,075 | 1987 | 27,906 | 1986 | 26,844 | 1985 | 26,175 | 1984 | 25,805 | 1983 | 25,643 | 1982 | 25,695 | 1981 | 25,821 | 1980 | 25,917 | 1979 | 26,019 | 1978 | 26,169 | 1977 | 26,357 | 1976 | 26,665 | 1975 | 27,195 | 1974 | 27,979 | 1973 | 29,026 | 1972 | 30,177 | 1971 | 31,033 | 1970 | 31,366 | 1969 | 31,130 | 1968 | 30,218 | 1967 | 28,860 | 1966 | 27,680 | 1965 | 27,065 | 1964 | 26,996 | 1963 | 27,499 | 1962 | 28,357 | 1961 | 28,947 | 1960 | 28,866 |
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