Year | Value | 2022 | 54,674 | 2021 | 53,232 | 2020 | 50,862 | 2019 | 47,033 | 2018 | 43,070 | 2017 | 40,340 | 2016 | 40,314 | 2015 | 43,656 | 2014 | 49,778 | 2013 | 56,954 | 2012 | 63,704 | 2011 | 68,421 | 2010 | 69,487 | 2009 | 67,715 | 2008 | 64,829 | 2007 | 61,270 | 2006 | 58,456 | 2005 | 57,362 | 2004 | 58,535 | 2003 | 61,249 | 2002 | 64,414 | 2001 | 66,756 | 2000 | 67,226 | 1999 | 65,240 | 1998 | 60,559 | 1997 | 54,185 | 1996 | 48,057 | 1995 | 42,939 | 1994 | 38,881 | 1993 | 35,534 | 1992 | 33,023 | 1991 | 31,589 | 1990 | 31,242 | 1989 | 32,228 | 1988 | 33,907 | 1987 | 35,724 | 1986 | 37,537 | 1985 | 38,860 | 1984 | 39,456 | 1983 | 39,557 | 1982 | 39,533 | 1981 | 39,441 | 1980 | 39,152 | 1979 | 38,531 | 1978 | 37,720 | 1977 | 37,090 | 1976 | 36,638 | 1975 | 36,212 | 1974 | 35,646 | 1973 | 34,836 | 1972 | 33,759 | 1971 | 32,435 | 1970 | 31,559 | 1969 | 31,057 | 1968 | 30,610 | 1967 | 30,453 | 1966 | 30,271 | 1965 | 30,264 | 1964 | 30,512 | 1963 | 30,828 | 1962 | 31,225 | 1961 | 31,591 | 1960 | 31,930 |
|