Year | Value | 2022 | 67,607 | 2021 | 66,903 | 2020 | 65,697 | 2019 | 64,154 | 2018 | 61,787 | 2017 | 59,194 | 2016 | 56,623 | 2015 | 52,516 | 2014 | 48,194 | 2013 | 45,814 | 2012 | 44,374 | 2011 | 43,598 | 2010 | 44,610 | 2009 | 45,876 | 2008 | 45,360 | 2007 | 44,553 | 2006 | 43,731 | 2005 | 43,160 | 2004 | 42,695 | 2003 | 42,522 | 2002 | 42,428 | 2001 | 42,132 | 2000 | 41,953 | 1999 | 41,646 | 1998 | 41,111 | 1997 | 40,414 | 1996 | 39,045 | 1995 | 36,878 | 1994 | 34,613 | 1993 | 32,801 | 1992 | 31,276 | 1991 | 30,066 | 1990 | 29,073 | 1989 | 27,943 | 1988 | 25,932 | 1987 | 23,151 | 1986 | 20,366 | 1985 | 18,436 | 1984 | 18,449 | 1983 | 20,574 | 1982 | 23,887 | 1981 | 27,421 | 1980 | 30,443 | 1979 | 31,991 | 1978 | 32,385 | 1977 | 32,318 | 1976 | 32,009 | 1975 | 31,467 | 1974 | 30,741 | 1973 | 30,160 | 1972 | 29,792 | 1971 | 29,684 | 1970 | 29,674 | 1969 | 29,553 | 1968 | 29,024 | 1967 | 27,954 | 1966 | 26,376 | 1965 | 24,491 | 1964 | 22,816 | 1963 | 21,492 | 1962 | 20,438 | 1961 | 19,601 | 1960 | 18,869 |
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