Year | Value | 2022 | 37,320 | 2021 | 36,756 | 2020 | 36,533 | 2019 | 36,013 | 2018 | 35,387 | 2017 | 35,514 | 2016 | 35,994 | 2015 | 35,712 | 2014 | 35,241 | 2013 | 34,549 | 2012 | 33,075 | 2011 | 31,529 | 2010 | 29,822 | 2009 | 28,258 | 2008 | 26,941 | 2007 | 25,618 | 2006 | 24,352 | 2005 | 23,171 | 2004 | 22,076 | 2003 | 21,060 | 2002 | 20,124 | 2001 | 19,240 | 2000 | 18,376 | 1999 | 17,542 | 1998 | 17,341 | 1997 | 17,293 | 1996 | 16,837 | 1995 | 16,428 | 1994 | 15,854 | 1993 | 15,421 | 1992 | 15,288 | 1991 | 15,013 | 1990 | 14,603 | 1989 | 14,409 | 1988 | 15,324 | 1987 | 16,263 | 1986 | 16,103 | 1985 | 15,732 | 1984 | 15,387 | 1983 | 15,026 | 1982 | 14,598 | 1981 | 14,135 | 1980 | 13,678 | 1979 | 13,233 | 1978 | 12,797 | 1977 | 12,362 | 1976 | 11,936 | 1975 | 11,525 | 1974 | 11,123 | 1973 | 10,724 | 1972 | 10,435 | 1971 | 10,282 | 1970 | 10,331 | 1969 | 10,601 | 1968 | 10,947 | 1967 | 11,367 | 1966 | 11,841 | 1965 | 12,204 | 1964 | 12,323 | 1963 | 12,415 | 1962 | 12,497 | 1961 | 12,498 | 1960 | 12,536 |
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