Year | Value | 2022 | 12,712 | 2021 | 13,093 | 2020 | 13,788 | 2019 | 14,674 | 2018 | 15,667 | 2017 | 16,617 | 2016 | 17,421 | 2015 | 18,112 | 2014 | 18,657 | 2013 | 19,046 | 2012 | 19,518 | 2011 | 20,252 | 2010 | 21,220 | 2009 | 22,377 | 2008 | 23,530 | 2007 | 24,361 | 2006 | 24,777 | 2005 | 24,683 | 2004 | 23,835 | 2003 | 22,270 | 2002 | 20,186 | 2001 | 18,043 | 2000 | 16,295 | 1999 | 14,890 | 1998 | 13,675 | 1997 | 12,670 | 1996 | 12,017 | 1995 | 11,716 | 1994 | 11,644 | 1993 | 11,714 | 1992 | 11,776 | 1991 | 11,812 | 1990 | 11,889 | 1989 | 11,823 | 1988 | 11,643 | 1987 | 11,545 | 1986 | 11,551 | 1985 | 11,696 | 1984 | 12,054 | 1983 | 12,583 | 1982 | 13,106 | 1981 | 13,623 | 1980 | 14,505 | 1979 | 15,732 | 1978 | 16,958 | 1977 | 18,110 | 1976 | 19,120 | 1975 | 19,939 | 1974 | 20,557 | 1973 | 20,961 | 1972 | 21,117 | 1971 | 20,970 | 1970 | 19,903 | 1969 | 18,089 | 1968 | 16,357 | 1967 | 14,751 | 1966 | 13,279 | 1965 | 11,942 | 1964 | 10,633 | 1963 | 9,238 | 1962 | 7,871 | 1961 | 6,682 | 1960 | 5,908 |
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