Year | Value | 2022 | 81,474 | 2021 | 79,400 | 2020 | 77,499 | 2019 | 75,457 | 2018 | 71,959 | 2017 | 68,020 | 2016 | 64,159 | 2015 | 59,879 | 2014 | 54,995 | 2013 | 50,390 | 2012 | 46,091 | 2011 | 42,286 | 2010 | 39,024 | 2009 | 36,374 | 2008 | 34,225 | 2007 | 32,440 | 2006 | 30,925 | 2005 | 29,546 | 2004 | 28,316 | 2003 | 27,501 | 2002 | 27,254 | 2001 | 27,512 | 2000 | 28,052 | 1999 | 28,415 | 1998 | 28,307 | 1997 | 27,818 | 1996 | 27,061 | 1995 | 26,197 | 1994 | 25,605 | 1993 | 25,518 | 1992 | 25,793 | 1991 | 26,154 | 1990 | 26,304 | 1989 | 26,022 | 1988 | 25,202 | 1987 | 23,989 | 1986 | 22,741 | 1985 | 21,800 | 1984 | 21,295 | 1983 | 21,192 | 1982 | 21,458 | 1981 | 21,892 | 1980 | 22,277 | 1979 | 22,558 | 1978 | 22,593 | 1977 | 22,372 | 1976 | 22,086 | 1975 | 21,768 | 1974 | 21,459 | 1973 | 21,305 | 1972 | 21,378 | 1971 | 21,719 | 1970 | 22,334 | 1969 | 23,049 | 1968 | 23,375 | 1967 | 23,047 | 1966 | 22,357 | 1965 | 21,803 | 1964 | 21,784 | 1963 | 22,258 | 1962 | 22,483 | 1961 | 21,925 | 1960 | 20,898 |
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