| Year | Value | | 2022 | 36,876 | | 2021 | 35,930 | | 2020 | 34,378 | | 2019 | 32,318 | | 2018 | 30,078 | | 2017 | 27,922 | | 2016 | 25,908 | | 2015 | 23,565 | | 2014 | 21,496 | | 2013 | 20,175 | | 2012 | 19,148 | | 2011 | 18,204 | | 2010 | 17,160 | | 2009 | 16,271 | | 2008 | 15,461 | | 2007 | 14,667 | | 2006 | 13,379 | | 2005 | 12,112 | | 2004 | 11,399 | | 2003 | 10,700 | | 2002 | 10,042 | | 2001 | 9,444 | | 2000 | 8,915 | | 1999 | 8,446 | | 1998 | 8,031 | | 1997 | 7,663 | | 1996 | 7,328 | | 1995 | 7,017 | | 1994 | 6,735 | | 1993 | 6,481 | | 1992 | 6,244 | | 1991 | 6,015 | | 1990 | 5,795 | | 1989 | 5,543 | | 1988 | 5,261 | | 1987 | 5,006 | | 1986 | 4,785 | | 1985 | 4,596 | | 1984 | 4,433 | | 1983 | 4,299 | | 1982 | 4,191 | | 1981 | 4,107 | | 1980 | 4,051 | | 1979 | 4,023 | | 1978 | 4,016 | | 1977 | 4,012 | | 1976 | 3,996 | | 1975 | 3,948 | | 1974 | 3,864 | | 1973 | 3,750 | | 1972 | 3,619 | | 1971 | 3,479 | | 1970 | 3,333 | | 1969 | 3,171 | | 1968 | 2,993 | | 1967 | 2,817 | | 1966 | 2,656 | | 1965 | 2,523 | | 1964 | 2,424 | | 1963 | 2,353 | | 1962 | 2,296 | | 1961 | 2,229 | | 1960 | 2,137 |
|