Year | Value | 2022 | 24,914,036 | 2021 | 24,695,515 | 2020 | 24,443,214 | 2019 | 24,152,908 | 2018 | 23,833,057 | 2017 | 23,480,133 | 2016 | 23,103,054 | 2015 | 22,715,891 | 2014 | 22,323,178 | 2013 | 21,943,229 | 2012 | 21,585,135 | 2011 | 21,239,462 | 2010 | 20,903,330 | 2009 | 20,589,960 | 2008 | 20,272,178 | 2007 | 19,969,865 | 2006 | 19,697,911 | 2005 | 19,459,844 | 2004 | 19,248,800 | 2003 | 19,041,162 | 2002 | 18,804,601 | 2001 | 18,516,674 | 2000 | 18,168,815 | 1999 | 17,761,053 | 1998 | 17,310,295 | 1997 | 16,835,975 | 1996 | 16,351,999 | 1995 | 15,869,565 | 1994 | 15,393,923 | 1993 | 14,923,657 | 1992 | 14,460,408 | 1991 | 14,010,722 | 1990 | 13,572,597 | 1989 | 13,138,679 | 1988 | 12,692,303 | 1987 | 12,229,929 | 1986 | 11,763,887 | 1985 | 11,297,676 | 1984 | 10,848,922 | 1983 | 10,446,525 | 1982 | 10,098,276 | 1981 | 9,795,763 | 1980 | 9,528,747 | 1979 | 9,281,285 | 1978 | 9,044,489 | 1977 | 8,813,468 | 1976 | 8,587,286 | 1975 | 8,371,609 | 1974 | 8,173,509 | 1973 | 8,000,498 | 1972 | 7,856,015 | 1971 | 7,729,260 | 1970 | 7,614,453 | 1969 | 7,505,748 | 1968 | 7,391,435 | 1967 | 7,264,827 | 1966 | 7,122,192 | 1965 | 6,963,767 | 1964 | 6,791,392 | 1963 | 6,605,752 | 1962 | 6,409,008 | 1961 | 6,207,158 | 1960 | 6,004,582 |
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