Year | Value | 2022 | 57,628 | 2021 | 57,371 | 2020 | 57,102 | 2019 | 56,827 | 2018 | 56,572 | 2017 | 56,360 | 2016 | 56,190 | 2015 | 56,082 | 2014 | 56,054 | 2013 | 56,080 | 2012 | 56,185 | 2011 | 56,394 | 2010 | 56,692 | 2009 | 57,046 | 2008 | 57,513 | 2007 | 58,015 | 2006 | 58,275 | 2005 | 58,235 | 2004 | 57,876 | 2003 | 57,074 | 2002 | 55,759 | 2001 | 54,266 | 2000 | 53,017 | 1999 | 52,049 | 1998 | 51,274 | 1997 | 50,615 | 1996 | 50,082 | 1995 | 49,741 | 1994 | 49,935 | 1993 | 49,505 | 1992 | 50,978 | 1991 | 51,830 | 1990 | 47,908 | 1989 | 43,511 | 1988 | 40,521 | 1987 | 38,236 | 1986 | 36,105 | 1985 | 34,345 | 1984 | 33,009 | 1983 | 32,014 | 1982 | 31,160 | 1981 | 30,185 | 1980 | 28,878 | 1979 | 27,164 | 1978 | 25,121 | 1977 | 22,959 | 1976 | 20,902 | 1975 | 19,081 | 1974 | 17,546 | 1973 | 16,271 | 1972 | 15,156 | 1971 | 14,128 | 1970 | 13,201 | 1969 | 12,351 | 1968 | 11,614 | 1967 | 10,988 | 1966 | 10,383 | 1965 | 9,796 | 1964 | 9,237 | 1963 | 8,732 | 1962 | 8,292 | 1961 | 7,917 | 1960 | 7,592 |
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