Year | Value | 2022 | 48,501,287 | 2021 | 48,136,186 | 2020 | 47,726,158 | 2019 | 47,288,433 | 2018 | 46,856,269 | 2017 | 46,412,679 | 2016 | 45,954,943 | 2015 | 45,481,510 | 2014 | 44,995,810 | 2013 | 44,502,820 | 2012 | 44,010,133 | 2011 | 43,525,217 | 2010 | 43,048,310 | 2009 | 42,576,401 | 2008 | 42,119,105 | 2007 | 41,680,018 | 2006 | 41,252,012 | 2005 | 40,824,111 | 2004 | 40,386,478 | 2003 | 39,947,965 | 2002 | 39,510,889 | 2001 | 39,078,656 | 2000 | 38,652,066 | 1999 | 38,212,637 | 1998 | 37,722,224 | 1997 | 37,187,435 | 1996 | 36,634,171 | 1995 | 36,045,251 | 1994 | 35,423,993 | 1993 | 34,771,767 | 1992 | 34,086,353 | 1991 | 33,377,857 | 1990 | 32,660,517 | 1989 | 31,942,656 | 1988 | 31,237,107 | 1987 | 30,547,068 | 1986 | 29,857,450 | 1985 | 29,166,656 | 1984 | 28,477,135 | 1983 | 27,793,740 | 1982 | 27,119,099 | 1981 | 26,457,143 | 1980 | 25,814,547 | 1979 | 25,295,244 | 1978 | 24,774,747 | 1977 | 24,137,493 | 1976 | 23,513,873 | 1975 | 22,923,821 | 1974 | 22,409,573 | 1973 | 21,934,454 | 1972 | 21,473,022 | 1971 | 21,009,828 | 1970 | 20,542,041 | 1969 | 20,111,857 | 1968 | 19,705,563 | 1967 | 19,298,765 | 1966 | 18,867,872 | 1965 | 18,421,131 | 1964 | 17,954,365 | 1963 | 17,473,324 | 1962 | 16,985,297 | 1961 | 16,535,970 | 1960 | 16,089,652 |
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