Year | Value | 2022 | 81,908,619 | 2021 | 80,729,633 | 2020 | 79,437,572 | 2019 | 78,093,012 | 2018 | 77,394,515 | 2017 | 76,792,668 | 2016 | 73,417,936 | 2015 | 67,755,072 | 2014 | 62,234,719 | 2013 | 56,909,587 | 2012 | 53,595,009 | 2011 | 53,809,673 | 2010 | 55,691,363 | 2009 | 57,479,641 | 2008 | 58,098,649 | 2007 | 57,252,664 | 2006 | 55,821,510 | 2005 | 54,024,457 | 2004 | 51,669,010 | 2003 | 49,066,890 | 2002 | 46,177,289 | 2001 | 43,354,071 | 2000 | 40,742,740 | 1999 | 38,241,346 | 1998 | 36,189,513 | 1997 | 34,467,477 | 1996 | 33,233,342 | 1995 | 32,472,904 | 1994 | 31,918,284 | 1993 | 31,550,843 | 1992 | 31,375,140 | 1991 | 31,132,209 | 1990 | 30,873,000 | 1989 | 30,732,928 | 1988 | 30,558,551 | 1987 | 30,128,676 | 1986 | 29,465,561 | 1985 | 28,764,932 | 1984 | 28,038,029 | 1983 | 27,206,671 | 1982 | 26,424,552 | 1981 | 25,722,037 | 1980 | 25,051,072 | 1979 | 24,474,045 | 1978 | 23,850,188 | 1977 | 23,138,860 | 1976 | 22,570,171 | 1975 | 22,029,608 | 1974 | 21,356,567 | 1973 | 20,672,003 | 1972 | 20,128,710 | 1971 | 19,672,918 | 1970 | 19,237,311 | 1969 | 18,962,564 | 1968 | 18,845,443 | 1967 | 18,638,278 | 1966 | 18,283,393 | 1965 | 17,906,788 | 1964 | 17,571,960 | 1963 | 17,252,507 | 1962 | 16,967,255 | 1961 | 16,865,330 | 1960 | 16,966,546 |
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