Year | Value | 2022 | 48,681,474 | 2021 | 47,639,454 | 2020 | 46,635,684 | 2019 | 45,718,441 | 2018 | 44,929,047 | 2017 | 44,137,064 | 2016 | 43,260,467 | 2015 | 42,348,529 | 2014 | 41,426,503 | 2013 | 40,511,836 | 2012 | 39,652,276 | 2011 | 38,822,000 | 2010 | 38,034,285 | 2009 | 37,317,951 | 2008 | 36,636,384 | 2007 | 35,965,124 | 2006 | 35,316,287 | 2005 | 34,672,663 | 2004 | 33,990,332 | 2003 | 33,282,431 | 2002 | 32,589,589 | 2001 | 31,905,420 | 2000 | 31,220,826 | 1999 | 30,536,116 | 1998 | 29,819,668 | 1997 | 29,039,487 | 1996 | 28,209,469 | 1995 | 27,349,499 | 1994 | 26,470,361 | 1993 | 25,365,141 | 1992 | 24,043,958 | 1991 | 22,764,362 | 1990 | 21,548,662 | 1989 | 20,387,109 | 1988 | 19,527,072 | 1987 | 18,989,475 | 1986 | 18,525,947 | 1985 | 18,115,222 | 1984 | 17,773,374 | 1983 | 17,506,048 | 1982 | 17,295,658 | 1981 | 17,100,208 | 1980 | 16,882,684 | 1979 | 16,639,830 | 1978 | 16,369,790 | 1977 | 16,076,156 | 1976 | 15,796,347 | 1975 | 15,546,500 | 1974 | 15,307,534 | 1973 | 15,073,310 | 1972 | 14,845,217 | 1971 | 14,616,025 | 1970 | 14,376,755 | 1969 | 14,129,108 | 1968 | 13,875,087 | 1967 | 13,618,666 | 1966 | 13,372,811 | 1965 | 13,139,015 | 1964 | 12,910,274 | 1963 | 12,687,699 | 1962 | 12,470,781 | 1961 | 12,248,339 | 1960 | 12,016,145 |
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