Year | Value | 2022 | 72,703,315 | 2021 | 75,506,051 | 2020 | 78,282,381 | 2019 | 80,459,201 | 2018 | 81,625,027 | 2017 | 81,494,214 | 2016 | 80,437,834 | 2015 | 79,314,108 | 2014 | 78,146,057 | 2013 | 77,595,222 | 2012 | 77,090,994 | 2011 | 73,764,686 | 2010 | 68,157,760 | 2009 | 62,699,369 | 2008 | 57,411,315 | 2007 | 54,146,218 | 2006 | 54,458,454 | 2005 | 56,420,428 | 2004 | 58,266,730 | 2003 | 58,977,875 | 2002 | 58,259,582 | 2001 | 56,913,510 | 2000 | 55,134,475 | 1999 | 52,674,241 | 1998 | 49,787,181 | 1997 | 46,454,015 | 1996 | 43,168,380 | 1995 | 40,227,955 | 1994 | 37,497,140 | 1993 | 35,304,666 | 1992 | 33,583,027 | 1991 | 32,365,327 | 1990 | 31,535,242 | 1989 | 30,925,719 | 1988 | 30,497,333 | 1987 | 30,245,707 | 1986 | 30,016,237 | 1985 | 29,872,501 | 1984 | 29,889,232 | 1983 | 29,901,713 | 1982 | 29,688,715 | 1981 | 29,199,071 | 1980 | 28,587,656 | 1979 | 27,917,689 | 1978 | 27,172,018 | 1977 | 26,462,661 | 1976 | 25,818,266 | 1975 | 25,211,418 | 1974 | 24,715,898 | 1973 | 24,192,558 | 1972 | 23,587,104 | 1971 | 23,102,060 | 1970 | 22,624,255 | 1969 | 22,030,151 | 1968 | 21,441,744 | 1967 | 20,998,553 | 1966 | 20,649,726 | 1965 | 20,310,189 | 1964 | 20,131,166 | 1963 | 20,105,599 | 1962 | 19,925,904 | 1961 | 19,639,141 | 1960 | 19,496,261 |
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