Year | Value | 2022 | 50,007,320 | 2021 | 50,228,432 | 2020 | 52,032,502 | 2019 | 53,726,170 | 2018 | 54,357,937 | 2017 | 53,670,662 | 2016 | 52,412,160 | 2015 | 50,766,363 | 2014 | 48,500,420 | 2013 | 45,864,212 | 2012 | 42,812,920 | 2011 | 39,782,995 | 2010 | 37,072,385 | 2009 | 34,549,734 | 2008 | 32,513,701 | 2007 | 30,889,787 | 2006 | 29,719,092 | 2005 | 28,881,549 | 2004 | 28,242,610 | 2003 | 27,782,418 | 2002 | 27,467,859 | 2001 | 27,145,942 | 2000 | 26,882,894 | 1999 | 26,751,961 | 1998 | 26,624,223 | 1997 | 26,305,964 | 1996 | 25,728,693 | 1995 | 25,024,431 | 1994 | 24,284,795 | 1993 | 23,514,727 | 1992 | 22,799,099 | 1991 | 22,150,783 | 1990 | 21,569,189 | 1989 | 21,093,415 | 1988 | 20,581,032 | 1987 | 20,004,329 | 1986 | 19,539,894 | 1985 | 19,087,098 | 1984 | 18,518,022 | 1983 | 17,938,903 | 1982 | 17,481,404 | 1981 | 17,115,773 | 1980 | 16,764,558 | 1979 | 16,474,592 | 1978 | 16,249,928 | 1977 | 15,933,063 | 1976 | 15,502,520 | 1975 | 15,078,638 | 1974 | 14,705,883 | 1973 | 14,363,889 | 1972 | 14,090,167 | 1971 | 13,914,349 | 1970 | 13,755,237 | 1969 | 13,531,685 | 1968 | 13,295,023 | 1967 | 13,088,904 | 1966 | 12,832,957 | 1965 | 12,484,765 | 1964 | 12,092,165 | 1963 | 11,681,383 | 1962 | 11,285,827 | 1961 | 11,007,776 | 1960 | 10,947,128 |
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