Year | Value | 2022 | 25,011 | 2021 | 24,167 | 2020 | 23,359 | 2019 | 22,565 | 2018 | 21,822 | 2017 | 21,154 | 2016 | 20,529 | 2015 | 19,921 | 2014 | 19,294 | 2013 | 18,604 | 2012 | 17,932 | 2011 | 17,319 | 2010 | 16,707 | 2009 | 16,130 | 2008 | 15,643 | 2007 | 15,164 | 2006 | 14,678 | 2005 | 14,270 | 2004 | 13,945 | 2003 | 13,710 | 2002 | 13,543 | 2001 | 13,403 | 2000 | 13,270 | 1999 | 13,137 | 1998 | 12,986 | 1997 | 12,821 | 1996 | 12,662 | 1995 | 12,516 | 1994 | 12,380 | 1993 | 12,242 | 1992 | 12,105 | 1991 | 11,980 | 1990 | 11,861 | 1989 | 11,742 | 1988 | 11,625 | 1987 | 11,509 | 1986 | 11,398 | 1985 | 11,291 | 1984 | 11,190 | 1983 | 11,092 | 1982 | 10,999 | 1981 | 10,909 | 1980 | 10,821 | 1979 | 10,735 | 1978 | 10,652 | 1977 | 10,574 | 1976 | 10,502 | 1975 | 10,430 | 1974 | 10,357 | 1973 | 10,284 | 1972 | 10,209 | 1971 | 10,134 | 1970 | 10,058 | 1969 | 9,978 | 1968 | 9,903 | 1967 | 9,833 | 1966 | 9,764 | 1965 | 9,693 | 1964 | 9,625 | 1963 | 9,558 | 1962 | 9,490 | 1961 | 9,424 | 1960 | 9,361 |
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