Year | Value | 2022 | 40,510 | 2021 | 38,923 | 2020 | 37,610 | 2019 | 36,560 | 2018 | 35,805 | 2017 | 35,236 | 2016 | 34,786 | 2015 | 34,391 | 2014 | 33,208 | 2013 | 30,065 | 2012 | 27,346 | 2011 | 26,529 | 2010 | 26,125 | 2009 | 25,673 | 2008 | 25,046 | 2007 | 24,301 | 2006 | 23,434 | 2005 | 22,514 | 2004 | 21,526 | 2003 | 20,435 | 2002 | 19,324 | 2001 | 18,171 | 2000 | 16,928 | 1999 | 15,616 | 1998 | 14,200 | 1997 | 12,824 | 1996 | 11,756 | 1995 | 11,125 | 1994 | 10,952 | 1993 | 11,295 | 1992 | 11,955 | 1991 | 12,503 | 1990 | 12,794 | 1989 | 12,848 | 1988 | 12,629 | 1987 | 12,184 | 1986 | 11,615 | 1985 | 11,149 | 1984 | 10,835 | 1983 | 10,588 | 1982 | 10,665 | 1981 | 10,738 | 1980 | 10,530 | 1979 | 10,324 | 1978 | 11,358 | 1977 | 12,391 | 1976 | 11,383 | 1975 | 10,462 | 1974 | 10,419 | 1973 | 10,390 | 1972 | 10,427 | 1971 | 10,435 | 1970 | 10,374 | 1969 | 10,248 | 1968 | 10,021 | 1967 | 9,742 | 1966 | 9,509 | 1965 | 9,369 | 1964 | 9,319 | 1963 | 9,357 | 1962 | 9,473 | 1961 | 9,584 | 1960 | 9,658 |
|