Year | Value | 2022 | 45,390 | 2021 | 45,644 | 2020 | 45,463 | 2019 | 44,465 | 2018 | 43,404 | 2017 | 42,292 | 2016 | 41,133 | 2015 | 40,046 | 2014 | 39,098 | 2013 | 38,215 | 2012 | 37,281 | 2011 | 36,203 | 2010 | 34,909 | 2009 | 33,383 | 2008 | 31,672 | 2007 | 29,886 | 2006 | 28,158 | 2005 | 26,571 | 2004 | 25,104 | 2003 | 23,742 | 2002 | 22,559 | 2001 | 21,587 | 2000 | 20,804 | 1999 | 20,181 | 1998 | 19,680 | 1997 | 19,227 | 1996 | 18,711 | 1995 | 18,079 | 1994 | 17,338 | 1993 | 16,520 | 1992 | 15,713 | 1991 | 15,010 | 1990 | 14,470 | 1989 | 14,134 | 1988 | 13,979 | 1987 | 13,951 | 1986 | 14,027 | 1985 | 14,193 | 1984 | 14,459 | 1983 | 14,845 | 1982 | 15,368 | 1981 | 15,607 | 1980 | 15,458 | 1979 | 15,178 | 1978 | 14,718 | 1977 | 14,165 | 1976 | 13,632 | 1975 | 13,198 | 1974 | 12,902 | 1973 | 12,510 | 1972 | 12,365 | 1971 | 12,506 | 1970 | 12,380 | 1969 | 12,047 | 1968 | 11,584 | 1967 | 11,016 | 1966 | 10,360 | 1965 | 9,664 | 1964 | 8,934 | 1963 | 8,117 | 1962 | 7,637 | 1961 | 7,551 | 1960 | 7,459 |
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