Year | Value | 2022 | 89,438,636 | 2021 | 91,384,378 | 2020 | 90,820,689 | 2019 | 88,542,691 | 2018 | 86,213,731 | 2017 | 84,198,771 | 2016 | 82,435,490 | 2015 | 80,782,545 | 2014 | 79,391,176 | 2013 | 78,021,400 | 2012 | 75,930,332 | 2011 | 73,943,162 | 2010 | 73,262,238 | 2009 | 73,831,830 | 2008 | 75,868,252 | 2007 | 78,824,400 | 2006 | 81,850,657 | 2005 | 84,845,372 | 2004 | 87,173,572 | 2003 | 88,397,288 | 2002 | 88,185,109 | 2001 | 86,968,032 | 2000 | 85,682,159 | 1999 | 84,368,641 | 1998 | 83,689,364 | 1997 | 82,982,551 | 1996 | 79,250,288 | 1995 | 73,091,363 | 1994 | 67,099,456 | 1993 | 61,345,283 | 1992 | 57,768,871 | 1991 | 57,935,876 | 1990 | 59,881,803 | 1989 | 61,782,508 | 1988 | 62,448,676 | 1987 | 61,584,509 | 1986 | 60,123,519 | 1985 | 58,275,067 | 1984 | 55,836,038 | 1983 | 53,107,466 | 1982 | 50,076,303 | 1981 | 47,164,841 | 1980 | 44,540,085 | 1979 | 42,050,260 | 1978 | 40,012,907 | 1977 | 38,315,183 | 1976 | 37,147,429 | 1975 | 36,461,411 | 1974 | 35,985,807 | 1973 | 35,714,236 | 1972 | 35,646,743 | 1971 | 35,487,040 | 1970 | 35,248,066 | 1969 | 35,139,845 | 1968 | 35,034,086 | 1967 | 34,640,064 | 1966 | 33,955,795 | 1965 | 33,241,102 | 1964 | 32,602,667 | 1963 | 31,909,163 | 1962 | 31,208,143 | 1961 | 30,650,166 | 1960 | 30,299,706 |
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