Year | Value | 2022 | 31,076 | 2021 | 30,428 | 2020 | 29,523 | 2019 | 28,292 | 2018 | 26,968 | 2017 | 25,696 | 2016 | 24,449 | 2015 | 23,116 | 2014 | 21,786 | 2013 | 20,493 | 2012 | 19,239 | 2011 | 18,065 | 2010 | 17,008 | 2009 | 16,052 | 2008 | 15,201 | 2007 | 14,460 | 2006 | 13,801 | 2005 | 13,222 | 2004 | 12,737 | 2003 | 12,365 | 2002 | 12,074 | 2001 | 11,841 | 2000 | 11,669 | 1999 | 11,517 | 1998 | 11,363 | 1997 | 11,224 | 1996 | 11,120 | 1995 | 11,046 | 1994 | 11,010 | 1993 | 10,978 | 1992 | 10,929 | 1991 | 10,881 | 1990 | 10,833 | 1989 | 10,815 | 1988 | 10,830 | 1987 | 10,848 | 1986 | 10,834 | 1985 | 10,782 | 1984 | 10,710 | 1983 | 10,601 | 1982 | 10,466 | 1981 | 10,302 | 1980 | 10,095 | 1979 | 9,852 | 1978 | 9,574 | 1977 | 9,311 | 1976 | 9,109 | 1975 | 8,926 | 1974 | 8,724 | 1973 | 8,544 | 1972 | 8,391 | 1971 | 8,207 | 1970 | 8,002 | 1969 | 7,835 | 1968 | 7,662 | 1967 | 7,429 | 1966 | 7,166 | 1965 | 6,890 | 1964 | 6,608 | 1963 | 6,326 | 1962 | 6,048 | 1961 | 5,771 | 1960 | 5,505 |
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