Year | Value | 2022 | 64,917 | 2021 | 65,276 | 2020 | 66,091 | 2019 | 66,410 | 2018 | 66,793 | 2017 | 67,161 | 2016 | 67,265 | 2015 | 67,284 | 2014 | 68,507 | 2013 | 70,190 | 2012 | 71,307 | 2011 | 72,353 | 2010 | 72,906 | 2009 | 73,105 | 2008 | 73,349 | 2007 | 73,727 | 2006 | 74,259 | 2005 | 74,579 | 2004 | 74,542 | 2003 | 74,400 | 2002 | 73,871 | 2001 | 73,329 | 2000 | 72,526 | 1999 | 70,970 | 1998 | 68,532 | 1997 | 65,421 | 1996 | 62,307 | 1995 | 59,269 | 1994 | 56,132 | 1993 | 53,428 | 1992 | 51,253 | 1991 | 48,989 | 1990 | 46,815 | 1989 | 44,812 | 1988 | 43,422 | 1987 | 42,859 | 1986 | 42,681 | 1985 | 42,610 | 1984 | 42,599 | 1983 | 42,618 | 1982 | 42,662 | 1981 | 42,754 | 1980 | 42,894 | 1979 | 43,055 | 1978 | 43,217 | 1977 | 43,380 | 1976 | 43,526 | 1975 | 43,330 | 1974 | 42,783 | 1973 | 42,194 | 1972 | 41,574 | 1971 | 40,938 | 1970 | 40,279 | 1969 | 39,584 | 1968 | 38,880 | 1967 | 38,222 | 1966 | 37,638 | 1965 | 37,138 | 1964 | 36,723 | 1963 | 36,395 | 1962 | 36,139 | 1961 | 35,898 | 1960 | 35,638 |
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