Year | Value | 2022 | 52,636,799 | 2021 | 51,557,473 | 2020 | 50,476,837 | 2019 | 49,407,432 | 2018 | 48,368,317 | 2017 | 47,299,773 | 2016 | 46,165,664 | 2015 | 45,038,943 | 2014 | 43,963,777 | 2013 | 42,880,818 | 2012 | 41,830,525 | 2011 | 40,819,082 | 2010 | 39,826,123 | 2009 | 38,889,275 | 2008 | 37,987,272 | 2007 | 37,096,081 | 2006 | 36,213,541 | 2005 | 35,354,649 | 2004 | 34,533,832 | 2003 | 33,771,747 | 2002 | 33,035,311 | 2001 | 32,275,201 | 2000 | 31,541,294 | 1999 | 30,858,750 | 1998 | 30,199,714 | 1997 | 29,698,292 | 1996 | 29,432,032 | 1995 | 29,071,603 | 1994 | 28,066,253 | 1993 | 26,936,348 | 1992 | 26,255,327 | 1991 | 25,639,500 | 1990 | 24,963,478 | 1989 | 24,307,775 | 1988 | 23,700,974 | 1987 | 23,111,434 | 1986 | 22,547,051 | 1985 | 22,018,032 | 1984 | 21,483,614 | 1983 | 20,930,134 | 1982 | 20,435,512 | 1981 | 19,954,395 | 1980 | 19,478,111 | 1979 | 18,955,899 | 1978 | 18,369,444 | 1977 | 17,872,890 | 1976 | 17,488,626 | 1975 | 17,100,273 | 1974 | 16,707,233 | 1973 | 16,318,093 | 1972 | 15,936,123 | 1971 | 15,566,405 | 1970 | 15,192,795 | 1969 | 14,810,716 | 1968 | 14,431,837 | 1967 | 14,057,457 | 1966 | 13,695,646 | 1965 | 13,351,774 | 1964 | 13,029,098 | 1963 | 12,722,820 | 1962 | 12,426,661 | 1961 | 12,143,190 | 1960 | 11,869,886 |
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