Year | Value | 2022 | 68,516 | 2021 | 68,734 | 2020 | 69,293 | 2019 | 69,950 | 2018 | 70,296 | 2017 | 70,424 | 2016 | 70,664 | 2015 | 71,032 | 2014 | 71,325 | 2013 | 71,495 | 2012 | 71,539 | 2011 | 71,273 | 2010 | 70,651 | 2009 | 69,986 | 2008 | 69,476 | 2007 | 68,965 | 2006 | 68,175 | 2005 | 67,115 | 2004 | 65,946 | 2003 | 64,754 | 2002 | 63,253 | 2001 | 62,103 | 2000 | 60,130 | 1999 | 58,102 | 1998 | 55,775 | 1997 | 53,422 | 1996 | 52,017 | 1995 | 50,996 | 1994 | 50,570 | 1993 | 50,950 | 1992 | 52,029 | 1991 | 52,584 | 1990 | 52,592 | 1989 | 52,854 | 1988 | 53,031 | 1987 | 52,929 | 1986 | 52,526 | 1985 | 51,873 | 1984 | 51,049 | 1983 | 50,141 | 1982 | 49,220 | 1981 | 48,373 | 1980 | 47,533 | 1979 | 46,524 | 1978 | 45,268 | 1977 | 43,718 | 1976 | 41,890 | 1975 | 39,851 | 1974 | 37,659 | 1973 | 35,383 | 1972 | 33,121 | 1971 | 30,984 | 1970 | 29,224 | 1969 | 28,104 | 1968 | 27,742 | 1967 | 28,185 | 1966 | 29,237 | 1965 | 30,494 | 1964 | 31,539 | 1963 | 31,992 | 1962 | 31,385 | 1961 | 30,091 | 1960 | 28,671 |
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