Year | Value | 2022 | 70,581,951 | 2021 | 68,822,883 | 2020 | 68,209,948 | 2019 | 68,734,711 | 2018 | 70,649,016 | 2017 | 73,414,010 | 2016 | 76,215,805 | 2015 | 79,031,196 | 2014 | 81,277,255 | 2013 | 82,510,801 | 2012 | 82,418,050 | 2011 | 81,392,784 | 2010 | 80,338,703 | 2009 | 79,264,581 | 2008 | 78,813,285 | 2007 | 78,392,339 | 2006 | 75,091,465 | 2005 | 69,401,417 | 2004 | 63,822,155 | 2003 | 58,427,817 | 2002 | 55,087,257 | 2001 | 55,356,794 | 2000 | 57,288,120 | 1999 | 59,064,045 | 1998 | 59,636,333 | 1997 | 58,761,026 | 1996 | 57,277,031 | 1995 | 55,395,963 | 1994 | 52,886,578 | 1993 | 50,012,912 | 1992 | 46,736,206 | 1991 | 43,522,249 | 1990 | 40,691,090 | 1989 | 38,086,211 | 1988 | 35,983,319 | 1987 | 34,321,035 | 1986 | 33,147,774 | 1985 | 32,318,563 | 1984 | 31,692,929 | 1983 | 31,268,054 | 1982 | 31,026,342 | 1981 | 30,814,878 | 1980 | 30,711,783 | 1979 | 30,760,159 | 1978 | 30,778,107 | 1977 | 30,563,407 | 1976 | 30,075,002 | 1975 | 29,437,625 | 1974 | 28,741,540 | 1973 | 27,991,403 | 1972 | 27,278,079 | 1971 | 26,609,136 | 1970 | 25,968,872 | 1969 | 25,461,469 | 1968 | 24,945,612 | 1967 | 24,352,989 | 1966 | 23,880,751 | 1965 | 23,432,354 | 1964 | 22,933,644 | 1963 | 22,481,186 | 1962 | 22,136,174 | 1961 | 21,953,163 | 1960 | 21,917,637 |
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