Year | Value | 2022 | 34,049,588 | 2021 | 33,715,471 | 2020 | 33,304,756 | 2019 | 32,824,861 | 2018 | 32,203,944 | 2017 | 31,605,486 | 2016 | 31,132,779 | 2015 | 30,711,863 | 2014 | 30,353,951 | 2013 | 30,038,809 | 2012 | 29,749,589 | 2011 | 29,477,721 | 2010 | 29,229,572 | 2009 | 29,009,326 | 2008 | 28,806,185 | 2007 | 28,600,387 | 2006 | 28,381,078 | 2005 | 28,147,267 | 2004 | 27,893,911 | 2003 | 27,623,341 | 2002 | 27,334,503 | 2001 | 27,014,909 | 2000 | 26,654,439 | 1999 | 26,252,239 | 1998 | 25,818,226 | 1997 | 25,365,386 | 1996 | 24,907,304 | 1995 | 24,449,055 | 1994 | 23,983,258 | 1993 | 23,513,882 | 1992 | 23,047,248 | 1991 | 22,583,006 | 1990 | 22,109,099 | 1989 | 21,624,311 | 1988 | 21,143,799 | 1987 | 20,671,360 | 1986 | 20,208,437 | 1985 | 19,746,610 | 1984 | 19,285,646 | 1983 | 18,826,906 | 1982 | 18,374,372 | 1981 | 17,932,344 | 1980 | 17,492,406 | 1979 | 17,059,185 | 1978 | 16,638,480 | 1977 | 16,224,613 | 1976 | 15,826,813 | 1975 | 15,441,497 | 1974 | 15,057,175 | 1973 | 14,674,785 | 1972 | 14,292,437 | 1971 | 13,911,968 | 1970 | 13,562,371 | 1969 | 13,213,739 | 1968 | 12,843,249 | 1967 | 12,481,626 | 1966 | 12,127,990 | 1965 | 11,781,581 | 1964 | 11,442,301 | 1963 | 11,112,665 | 1962 | 10,792,094 | 1961 | 10,478,096 | 1960 | 10,172,207 |
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