Year | Value | 2022 | 52,726 | 2021 | 50,201 | 2020 | 46,499 | 2019 | 42,445 | 2018 | 40,126 | 2017 | 38,785 | 2016 | 38,168 | 2015 | 39,053 | 2014 | 40,112 | 2013 | 39,710 | 2012 | 38,730 | 2011 | 37,835 | 2010 | 37,147 | 2009 | 36,467 | 2008 | 35,775 | 2007 | 35,435 | 2006 | 34,878 | 2005 | 34,547 | 2004 | 34,257 | 2003 | 33,832 | 2002 | 33,198 | 2001 | 31,959 | 2000 | 30,045 | 1999 | 28,040 | 1998 | 26,417 | 1997 | 25,055 | 1996 | 23,963 | 1995 | 23,090 | 1994 | 22,111 | 1993 | 20,509 | 1992 | 18,377 | 1991 | 16,319 | 1990 | 14,830 | 1989 | 14,708 | 1988 | 16,287 | 1987 | 18,884 | 1986 | 21,420 | 1985 | 23,487 | 1984 | 24,709 | 1983 | 25,085 | 1982 | 25,088 | 1981 | 25,003 | 1980 | 24,825 | 1979 | 24,244 | 1978 | 23,651 | 1977 | 23,290 | 1976 | 23,097 | 1975 | 22,932 | 1974 | 22,787 | 1973 | 22,433 | 1972 | 21,686 | 1971 | 20,593 | 1970 | 19,228 | 1969 | 17,975 | 1968 | 16,993 | 1967 | 16,132 | 1966 | 15,353 | 1965 | 14,647 | 1964 | 14,056 | 1963 | 13,667 | 1962 | 13,427 | 1961 | 13,249 | 1960 | 13,157 |
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