Year | Value | 2022 | 38,394,028 | 2021 | 37,791,515 | 2020 | 36,888,144 | 2019 | 36,058,364 | 2018 | 35,349,759 | 2017 | 34,719,207 | 2016 | 34,124,519 | 2015 | 33,553,873 | 2014 | 33,002,656 | 2013 | 32,426,841 | 2012 | 31,768,697 | 2011 | 31,035,391 | 2010 | 30,280,124 | 2009 | 29,486,463 | 2008 | 28,674,746 | 2007 | 27,899,869 | 2006 | 27,131,767 | 2005 | 26,332,798 | 2004 | 25,555,498 | 2003 | 24,812,572 | 2002 | 24,096,442 | 2001 | 23,432,904 | 2000 | 22,831,654 | 1999 | 22,252,595 | 1998 | 21,691,387 | 1997 | 21,166,468 | 1996 | 20,685,743 | 1995 | 20,198,295 | 1994 | 19,603,259 | 1993 | 19,047,457 | 1992 | 18,594,245 | 1991 | 18,149,208 | 1990 | 17,756,986 | 1989 | 17,316,729 | 1988 | 16,925,175 | 1987 | 16,530,945 | 1986 | 16,141,588 | 1985 | 15,759,377 | 1984 | 15,379,673 | 1983 | 15,033,688 | 1982 | 14,710,242 | 1981 | 14,388,445 | 1980 | 14,063,114 | 1979 | 13,693,992 | 1978 | 13,284,740 | 1977 | 12,898,389 | 1976 | 12,537,282 | 1975 | 12,138,154 | 1974 | 11,735,514 | 1973 | 11,389,751 | 1972 | 11,101,767 | 1971 | 10,897,785 | 1970 | 10,803,418 | 1969 | 10,793,222 | 1968 | 10,835,021 | 1967 | 10,890,224 | 1966 | 10,848,010 | 1965 | 10,670,252 | 1964 | 10,386,695 | 1963 | 10,013,104 | 1962 | 9,642,792 | 1961 | 9,345,694 | 1960 | 9,185,353 |
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