Year | Value | 2022 | 45,592,287 | 2021 | 45,361,457 | 2020 | 45,147,825 | 2019 | 45,000,019 | 2018 | 44,894,490 | 2017 | 44,692,946 | 2016 | 44,589,059 | 2015 | 44,390,437 | 2014 | 43,897,623 | 2013 | 43,259,236 | 2012 | 42,646,470 | 2011 | 42,042,643 | 2010 | 41,456,866 | 2009 | 40,786,681 | 2008 | 40,115,600 | 2007 | 39,402,213 | 2006 | 38,870,277 | 2005 | 38,332,786 | 2004 | 37,743,193 | 2003 | 37,432,544 | 2002 | 37,315,737 | 2001 | 36,816,748 | 2000 | 35,679,542 | 1999 | 34,367,709 | 1998 | 33,046,127 | 1997 | 31,637,821 | 1996 | 30,371,273 | 1995 | 29,864,262 | 1994 | 29,678,629 | 1993 | 29,188,190 | 1992 | 28,664,870 | 1991 | 28,307,082 | 1990 | 27,914,720 | 1989 | 27,486,986 | 1988 | 27,188,505 | 1987 | 26,981,399 | 1986 | 26,819,810 | 1985 | 26,808,720 | 1984 | 26,986,661 | 1983 | 27,094,814 | 1982 | 27,055,801 | 1981 | 26,885,152 | 1980 | 26,449,117 | 1979 | 25,772,486 | 1978 | 25,235,032 | 1977 | 24,849,154 | 1976 | 24,390,187 | 1975 | 24,081,050 | 1974 | 23,712,713 | 1973 | 22,723,529 | 1972 | 21,436,972 | 1971 | 20,393,411 | 1970 | 19,505,631 | 1969 | 19,180,603 | 1968 | 19,619,218 | 1967 | 20,414,297 | 1966 | 21,130,679 | 1965 | 21,628,333 | 1964 | 21,838,701 | 1963 | 21,827,395 | 1962 | 21,720,586 | 1961 | 21,503,655 | 1960 | 21,247,132 |
|