Year | Value | 2022 | 31,426,005 | 2021 | 29,426,304 | 2020 | 27,603,464 | 2019 | 25,821,863 | 2018 | 24,357,030 | 2017 | 23,111,675 | 2016 | 22,157,072 | 2015 | 21,500,559 | 2014 | 21,006,322 | 2013 | 20,655,189 | 2012 | 20,434,473 | 2011 | 20,161,332 | 2010 | 19,864,920 | 2009 | 19,659,704 | 2008 | 19,460,940 | 2007 | 19,101,824 | 2006 | 18,586,415 | 2005 | 18,031,415 | 2004 | 17,449,492 | 2003 | 16,794,914 | 2002 | 16,169,768 | 2001 | 15,604,237 | 2000 | 15,042,768 | 1999 | 14,522,726 | 1998 | 13,983,942 | 1997 | 13,395,309 | 1996 | 12,883,894 | 1995 | 12,385,896 | 1994 | 11,812,022 | 1993 | 11,253,063 | 1992 | 10,789,515 | 1991 | 10,382,149 | 1990 | 10,012,239 | 1989 | 9,733,848 | 1988 | 9,537,400 | 1987 | 9,312,784 | 1986 | 9,027,637 | 1985 | 8,721,958 | 1984 | 8,389,024 | 1983 | 8,035,298 | 1982 | 7,718,881 | 1981 | 7,465,298 | 1980 | 7,237,243 | 1979 | 6,994,757 | 1978 | 6,765,122 | 1977 | 6,570,011 | 1976 | 6,371,947 | 1975 | 6,144,528 | 1974 | 5,882,957 | 1973 | 5,594,859 | 1972 | 5,322,081 | 1971 | 5,078,104 | 1970 | 4,871,252 | 1969 | 4,730,431 | 1968 | 4,619,424 | 1967 | 4,500,664 | 1966 | 4,375,713 | 1965 | 4,249,480 | 1964 | 4,156,495 | 1963 | 4,095,628 | 1962 | 4,037,765 | 1961 | 4,047,621 | 1960 | 4,170,595 |
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