Year | Value | 2022 | 41,870 | 2021 | 41,772 | 2020 | 41,556 | 2019 | 40,534 | 2018 | 38,846 | 2017 | 37,033 | 2016 | 35,153 | 2015 | 33,273 | 2014 | 31,387 | 2013 | 29,496 | 2012 | 27,623 | 2011 | 25,811 | 2010 | 24,097 | 2009 | 22,501 | 2008 | 21,041 | 2007 | 19,726 | 2006 | 18,541 | 2005 | 17,473 | 2004 | 16,531 | 2003 | 15,714 | 2002 | 15,040 | 2001 | 14,490 | 2000 | 14,027 | 1999 | 13,643 | 1998 | 13,341 | 1997 | 13,084 | 1996 | 12,864 | 1995 | 12,706 | 1994 | 12,638 | 1993 | 12,682 | 1992 | 12,790 | 1991 | 12,872 | 1990 | 12,947 | 1989 | 13,041 | 1988 | 13,106 | 1987 | 13,154 | 1986 | 13,129 | 1985 | 13,022 | 1984 | 12,888 | 1983 | 12,731 | 1982 | 12,527 | 1981 | 12,285 | 1980 | 12,031 | 1979 | 11,774 | 1978 | 11,525 | 1977 | 11,279 | 1976 | 11,025 | 1975 | 10,746 | 1974 | 10,424 | 1973 | 10,061 | 1972 | 9,688 | 1971 | 9,424 | 1970 | 9,440 | 1969 | 9,450 | 1968 | 9,273 | 1967 | 9,109 | 1966 | 8,973 | 1965 | 8,859 | 1964 | 8,788 | 1963 | 8,765 | 1962 | 8,770 | 1961 | 8,822 | 1960 | 8,559 |
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