Year | Value | 2022 | 34,664 | 2021 | 34,789 | 2020 | 34,837 | 2019 | 34,711 | 2018 | 34,439 | 2017 | 33,928 | 2016 | 33,181 | 2015 | 32,199 | 2014 | 30,967 | 2013 | 29,669 | 2012 | 28,569 | 2011 | 27,797 | 2010 | 27,388 | 2009 | 27,378 | 2008 | 27,619 | 2007 | 27,804 | 2006 | 27,887 | 2005 | 27,964 | 2004 | 28,058 | 2003 | 28,200 | 2002 | 28,393 | 2001 | 28,409 | 2000 | 28,246 | 1999 | 28,061 | 1998 | 27,778 | 1997 | 27,385 | 1996 | 27,021 | 1995 | 26,690 | 1994 | 26,225 | 1993 | 25,576 | 1992 | 24,800 | 1991 | 23,932 | 1990 | 22,910 | 1989 | 22,030 | 1988 | 21,469 | 1987 | 21,004 | 1986 | 20,620 | 1985 | 20,277 | 1984 | 19,686 | 1983 | 18,905 | 1982 | 18,233 | 1981 | 17,679 | 1980 | 17,233 | 1979 | 16,894 | 1978 | 16,569 | 1977 | 16,164 | 1976 | 15,700 | 1975 | 15,238 | 1974 | 14,775 | 1973 | 14,282 | 1972 | 13,766 | 1971 | 13,248 | 1970 | 12,740 | 1969 | 12,246 | 1968 | 11,782 | 1967 | 11,343 | 1966 | 10,926 | 1965 | 10,518 | 1964 | 10,115 | 1963 | 9,753 | 1962 | 9,448 | 1961 | 9,197 | 1960 | 8,989 |
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