Year | Value | 2022 | 53,166 | 2021 | 54,477 | 2020 | 55,388 | 2019 | 55,764 | 2018 | 55,429 | 2017 | 54,709 | 2016 | 53,953 | 2015 | 53,251 | 2014 | 52,449 | 2013 | 51,527 | 2012 | 50,535 | 2011 | 49,425 | 2010 | 48,159 | 2009 | 46,664 | 2008 | 45,109 | 2007 | 43,766 | 2006 | 42,570 | 2005 | 41,398 | 2004 | 40,331 | 2003 | 39,291 | 2002 | 38,306 | 2001 | 37,445 | 2000 | 36,667 | 1999 | 35,917 | 1998 | 35,179 | 1997 | 34,489 | 1996 | 33,502 | 1995 | 32,148 | 1994 | 32,799 | 1993 | 33,559 | 1992 | 31,817 | 1991 | 29,432 | 1990 | 27,052 | 1989 | 25,476 | 1988 | 23,676 | 1987 | 21,616 | 1986 | 20,418 | 1985 | 19,540 | 1984 | 18,960 | 1983 | 18,590 | 1982 | 18,358 | 1981 | 18,265 | 1980 | 18,227 | 1979 | 18,148 | 1978 | 17,856 | 1977 | 17,368 | 1976 | 16,853 | 1975 | 16,251 | 1974 | 15,572 | 1973 | 15,029 | 1972 | 14,591 | 1971 | 14,093 | 1970 | 13,591 | 1969 | 13,102 | 1968 | 12,643 | 1967 | 12,203 | 1966 | 11,832 | 1965 | 11,548 | 1964 | 11,324 | 1963 | 11,168 | 1962 | 11,048 | 1961 | 10,952 | 1960 | 10,872 |
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