Year | Value | 2022 | 38,994,509 | 2021 | 38,357,177 | 2020 | 37,420,444 | 2019 | 36,560,478 | 2018 | 35,827,972 | 2017 | 35,175,486 | 2016 | 34,558,244 | 2015 | 33,962,931 | 2014 | 33,387,740 | 2013 | 32,792,784 | 2012 | 32,120,868 | 2011 | 31,374,203 | 2010 | 30,606,179 | 2009 | 29,796,680 | 2008 | 28,956,466 | 2007 | 28,141,704 | 2006 | 27,334,223 | 2005 | 26,494,907 | 2004 | 25,671,837 | 2003 | 24,885,125 | 2002 | 24,124,557 | 2001 | 23,416,877 | 2000 | 22,778,857 | 1999 | 22,171,252 | 1998 | 21,584,824 | 1997 | 21,030,838 | 1996 | 20,515,542 | 1995 | 19,994,147 | 1994 | 19,371,331 | 1993 | 18,797,734 | 1992 | 18,330,625 | 1991 | 17,875,565 | 1990 | 17,478,816 | 1989 | 17,031,595 | 1988 | 16,643,140 | 1987 | 16,257,455 | 1986 | 15,871,741 | 1985 | 15,492,639 | 1984 | 15,116,252 | 1983 | 14,762,648 | 1982 | 14,426,163 | 1981 | 14,100,449 | 1980 | 13,752,798 | 1979 | 13,367,045 | 1978 | 12,978,142 | 1977 | 12,624,438 | 1976 | 12,295,485 | 1975 | 11,927,526 | 1974 | 11,558,318 | 1973 | 11,248,164 | 1972 | 10,976,633 | 1971 | 10,764,613 | 1970 | 10,656,706 | 1969 | 10,630,766 | 1968 | 10,654,293 | 1967 | 10,698,397 | 1966 | 10,652,859 | 1965 | 10,480,815 | 1964 | 10,219,078 | 1963 | 9,876,649 | 1962 | 9,522,823 | 1961 | 9,234,075 | 1960 | 9,068,496 |
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