Year | Value | 2022 | 36,009,333 | 2021 | 36,614,875 | 2020 | 37,369,155 | 2019 | 37,956,989 | 2018 | 38,401,905 | 2017 | 38,683,411 | 2016 | 38,858,107 | 2015 | 38,981,204 | 2014 | 39,133,083 | 2013 | 39,324,637 | 2012 | 39,493,181 | 2011 | 39,564,092 | 2010 | 39,563,544 | 2009 | 39,460,978 | 2008 | 39,302,621 | 2007 | 39,113,321 | 2006 | 39,051,575 | 2005 | 39,133,477 | 2004 | 39,246,733 | 2003 | 39,324,488 | 2002 | 39,421,070 | 2001 | 39,520,111 | 2000 | 39,599,190 | 1999 | 39,731,565 | 1998 | 39,947,642 | 1997 | 40,230,396 | 1996 | 40,559,783 | 1995 | 40,889,852 | 1994 | 41,112,985 | 1993 | 41,186,594 | 1992 | 41,123,358 | 1991 | 41,001,853 | 1990 | 40,864,609 | 1989 | 40,765,252 | 1988 | 40,731,363 | 1987 | 40,798,504 | 1986 | 40,966,440 | 1985 | 41,189,739 | 1984 | 41,398,524 | 1983 | 41,523,052 | 1982 | 41,537,935 | 1981 | 41,504,808 | 1980 | 41,482,393 | 1979 | 41,545,663 | 1978 | 41,711,614 | 1977 | 41,966,168 | 1976 | 42,341,041 | 1975 | 42,760,413 | 1974 | 43,060,762 | 1973 | 43,288,061 | 1972 | 43,473,192 | 1971 | 43,471,463 | 1970 | 43,479,392 | 1969 | 43,773,780 | 1968 | 44,016,859 | 1967 | 44,129,210 | 1966 | 44,228,193 | 1965 | 44,236,880 | 1964 | 43,995,179 | 1963 | 43,603,053 | 1962 | 43,168,735 | 1961 | 42,691,667 | 1960 | 42,211,548 |
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