Year | Value | 2022 | 39,482,179 | 2021 | 39,137,452 | 2020 | 38,762,028 | 2019 | 38,226,233 | 2018 | 37,707,583 | 2017 | 37,172,984 | 2016 | 36,797,857 | 2015 | 36,326,160 | 2014 | 35,751,023 | 2013 | 35,465,584 | 2012 | 35,415,723 | 2011 | 34,975,297 | 2010 | 33,913,481 | 2009 | 32,654,112 | 2008 | 31,379,713 | 2007 | 29,943,015 | 2006 | 28,733,880 | 2005 | 28,306,366 | 2004 | 28,156,014 | 2003 | 27,742,462 | 2002 | 27,346,880 | 2001 | 27,078,921 | 2000 | 26,792,947 | 1999 | 26,478,593 | 1998 | 26,173,754 | 1997 | 25,904,309 | 1996 | 25,696,947 | 1995 | 25,551,825 | 1994 | 25,523,799 | 1993 | 25,543,475 | 1992 | 25,536,230 | 1991 | 25,529,283 | 1990 | 25,463,796 | 1989 | 25,310,298 | 1988 | 25,297,495 | 1987 | 25,345,827 | 1986 | 25,220,696 | 1985 | 25,108,535 | 1984 | 24,780,381 | 1983 | 23,720,463 | 1982 | 22,327,302 | 1981 | 21,132,082 | 1980 | 20,107,296 | 1979 | 19,689,970 | 1978 | 20,150,447 | 1977 | 21,029,823 | 1976 | 21,814,862 | 1975 | 22,317,076 | 1974 | 22,451,683 | 1973 | 22,312,364 | 1972 | 22,046,852 | 1971 | 21,668,442 | 1970 | 21,231,237 | 1969 | 20,788,968 | 1968 | 20,279,691 | 1967 | 19,845,750 | 1966 | 19,504,964 | 1965 | 19,169,060 | 1964 | 18,833,255 | 1963 | 18,549,555 | 1962 | 18,228,759 | 1961 | 17,865,477 | 1960 | 17,530,083 |
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