Year | Value | 2022 | 52,572 | 2021 | 54,001 | 2020 | 55,365 | 2019 | 58,234 | 2018 | 59,369 | 2017 | 59,580 | 2016 | 62,243 | 2015 | 65,118 | 2014 | 67,568 | 2013 | 69,368 | 2012 | 70,603 | 2011 | 71,143 | 2010 | 70,903 | 2009 | 70,111 | 2008 | 68,775 | 2007 | 66,722 | 2006 | 64,248 | 2005 | 61,766 | 2004 | 59,538 | 2003 | 57,780 | 2002 | 56,605 | 2001 | 55,644 | 2000 | 54,561 | 1999 | 53,371 | 1998 | 52,184 | 1997 | 51,127 | 1996 | 50,548 | 1995 | 50,947 | 1994 | 52,476 | 1993 | 54,818 | 1992 | 57,447 | 1991 | 59,779 | 1990 | 61,226 | 1989 | 61,485 | 1988 | 60,541 | 1987 | 58,727 | 1986 | 56,833 | 1985 | 55,526 | 1984 | 54,833 | 1983 | 54,262 | 1982 | 53,588 | 1981 | 52,742 | 1980 | 51,374 | 1979 | 49,484 | 1978 | 47,560 | 1977 | 45,776 | 1976 | 43,902 | 1975 | 41,892 | 1974 | 39,858 | 1973 | 37,863 | 1972 | 35,907 | 1971 | 34,038 | 1970 | 32,341 | 1969 | 31,158 | 1968 | 30,445 | 1967 | 29,842 | 1966 | 29,298 | 1965 | 28,771 | 1964 | 28,245 | 1963 | 27,706 | 1962 | 27,150 | 1961 | 26,614 | 1960 | 26,097 |
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