Year | Value | 2022 | 47,166,203 | 2021 | 46,834,792 | 2020 | 46,614,346 | 2019 | 46,278,134 | 2018 | 46,028,742 | 2017 | 45,879,032 | 2016 | 45,833,630 | 2015 | 45,814,953 | 2014 | 45,792,220 | 2013 | 45,679,966 | 2012 | 45,476,239 | 2011 | 45,270,785 | 2010 | 45,140,267 | 2009 | 45,035,019 | 2008 | 45,035,879 | 2007 | 45,127,524 | 2006 | 45,399,409 | 2005 | 45,740,694 | 2004 | 45,975,671 | 2003 | 46,113,670 | 2002 | 46,148,219 | 2001 | 45,927,522 | 2000 | 45,723,701 | 1999 | 45,778,902 | 1998 | 45,865,526 | 1997 | 45,870,830 | 1996 | 45,903,023 | 1995 | 45,814,954 | 1994 | 45,411,292 | 1993 | 44,840,394 | 1992 | 44,221,813 | 1991 | 43,547,099 | 1990 | 42,835,305 | 1989 | 42,212,940 | 1988 | 41,641,798 | 1987 | 41,045,264 | 1986 | 40,615,846 | 1985 | 40,147,219 | 1984 | 39,581,592 | 1983 | 39,302,794 | 1982 | 39,240,286 | 1981 | 38,770,232 | 1980 | 37,645,784 | 1979 | 36,407,377 | 1978 | 35,178,991 | 1977 | 33,807,876 | 1976 | 32,566,907 | 1975 | 32,088,749 | 1974 | 31,860,511 | 1973 | 31,285,768 | 1972 | 30,691,742 | 1971 | 30,313,696 | 1970 | 29,894,437 | 1969 | 29,471,329 | 1968 | 29,199,293 | 1967 | 29,038,359 | 1966 | 28,895,269 | 1965 | 28,893,083 | 1964 | 29,076,133 | 1963 | 29,141,302 | 1962 | 29,033,791 | 1961 | 28,832,478 | 1960 | 28,423,346 |
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