| Year | Value | | 2022 | 12,455,870 | | 2021 | 12,104,279 | | 2020 | 11,754,032 | | 2019 | 11,379,354 | | 2018 | 10,989,008 | | 2017 | 10,600,368 | | 2016 | 10,210,570 | | 2015 | 9,816,973 | | 2014 | 9,407,251 | | 2013 | 8,991,226 | | 2012 | 8,615,075 | | 2011 | 8,287,491 | | 2010 | 7,992,990 | | 2009 | 7,739,093 | | 2008 | 7,520,409 | | 2007 | 7,300,064 | | 2006 | 7,069,915 | | 2005 | 6,849,658 | | 2004 | 6,648,303 | | 2003 | 6,468,027 | | 2002 | 6,300,036 | | 2001 | 6,143,312 | | 2000 | 6,002,693 | | 1999 | 5,868,428 | | 1998 | 5,734,867 | | 1997 | 5,609,912 | | 1996 | 5,489,879 | | 1995 | 5,375,609 | | 1994 | 5,285,778 | | 1993 | 5,203,104 | | 1992 | 5,100,722 | | 1991 | 4,998,546 | | 1990 | 4,907,144 | | 1989 | 4,811,503 | | 1988 | 4,713,239 | | 1987 | 4,614,959 | | 1986 | 4,516,022 | | 1985 | 4,421,069 | | 1984 | 4,327,369 | | 1983 | 4,238,316 | | 1982 | 4,153,736 | | 1981 | 4,072,641 | | 1980 | 3,997,956 | | 1979 | 3,916,359 | | 1978 | 3,824,389 | | 1977 | 3,733,971 | | 1976 | 3,646,807 | | 1975 | 3,561,013 | | 1974 | 3,474,990 | | 1973 | 3,387,128 | | 1972 | 3,300,858 | | 1971 | 3,227,129 | | 1970 | 3,159,968 | | 1969 | 3,087,875 | | 1968 | 3,017,278 | | 1967 | 2,950,554 | | 1966 | 2,885,175 | | 1965 | 2,818,612 | | 1964 | 2,750,559 | | 1963 | 2,682,076 | | 1962 | 2,614,155 | | 1961 | 2,548,424 | | 1960 | 2,486,560 |
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