Year | Value | 2022 | 56,522,518 | 2021 | 56,403,965 | 2020 | 56,283,168 | 2019 | 55,909,924 | 2018 | 55,426,598 | 2017 | 54,923,317 | 2016 | 54,382,825 | 2015 | 53,802,927 | 2014 | 53,209,683 | 2013 | 52,650,595 | 2012 | 52,130,345 | 2011 | 51,600,211 | 2010 | 51,030,310 | 2009 | 50,463,084 | 2008 | 49,913,475 | 2007 | 49,351,705 | 2006 | 48,798,541 | 2005 | 48,269,624 | 2004 | 47,767,769 | 2003 | 47,323,791 | 2002 | 46,930,583 | 2001 | 46,557,334 | 2000 | 46,319,551 | 1999 | 46,119,137 | 1998 | 45,931,122 | 1997 | 45,762,480 | 1996 | 45,610,451 | 1995 | 45,459,651 | 1994 | 45,304,828 | 1993 | 45,154,426 | 1992 | 45,011,752 | 1991 | 44,855,736 | 1990 | 44,733,264 | 1989 | 44,628,280 | 1988 | 44,540,723 | 1987 | 44,470,325 | 1986 | 44,404,206 | 1985 | 44,329,755 | 1984 | 44,257,473 | 1983 | 44,215,089 | 1982 | 44,228,171 | 1981 | 44,271,630 | 1980 | 44,195,960 | 1979 | 44,054,299 | 1978 | 43,925,435 | 1977 | 43,833,733 | 1976 | 43,757,644 | 1975 | 43,677,888 | 1974 | 43,590,038 | 1973 | 43,470,962 | 1972 | 43,295,638 | 1971 | 43,056,861 | 1970 | 42,925,829 | 1969 | 42,833,742 | 1968 | 42,733,856 | 1967 | 42,603,817 | 1966 | 42,452,048 | 1965 | 42,294,196 | 1964 | 42,098,400 | 1963 | 41,900,114 | 1962 | 41,661,202 | 1961 | 41,381,472 | 1960 | 41,104,656 |
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