Year | Value | 2022 | 71,448 | 2021 | 71,395 | 2020 | 71,550 | 2019 | 71,800 | 2018 | 72,149 | 2017 | 72,207 | 2016 | 71,600 | 2015 | 70,667 | 2014 | 69,541 | 2013 | 67,881 | 2012 | 65,783 | 2011 | 63,280 | 2010 | 59,173 | 2009 | 55,015 | 2008 | 53,058 | 2007 | 52,615 | 2006 | 52,257 | 2005 | 53,475 | 2004 | 55,297 | 2003 | 55,470 | 2002 | 54,768 | 2001 | 54,408 | 2000 | 54,406 | 1999 | 54,522 | 1998 | 55,118 | 1997 | 56,145 | 1996 | 57,079 | 1995 | 58,062 | 1994 | 58,660 | 1993 | 58,716 | 1992 | 58,627 | 1991 | 58,353 | 1990 | 57,897 | 1989 | 57,513 | 1988 | 57,357 | 1987 | 57,007 | 1986 | 55,713 | 1985 | 53,639 | 1984 | 51,044 | 1983 | 46,729 | 1982 | 40,911 | 1981 | 35,534 | 1980 | 31,817 | 1979 | 31,144 | 1978 | 33,914 | 1977 | 38,617 | 1976 | 43,355 | 1975 | 46,871 | 1974 | 48,598 | 1973 | 48,846 | 1972 | 48,412 | 1971 | 47,967 | 1970 | 47,381 | 1969 | 46,428 | 1968 | 45,570 | 1967 | 44,914 | 1966 | 44,545 | 1965 | 44,442 | 1964 | 44,200 | 1963 | 43,505 | 1962 | 42,509 | 1961 | 41,008 | 1960 | 39,052 |
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