| Year | Value | | 2022 | 10,839,007 | | 2021 | 10,639,772 | | 2020 | 10,435,554 | | 2019 | 10,181,277 | | 2018 | 10,042,116 | | 2017 | 9,975,152 | | 2016 | 10,040,572 | | 2015 | 10,227,065 | | 2014 | 10,410,285 | | 2013 | 10,535,311 | | 2012 | 10,600,627 | | 2011 | 10,566,051 | | 2010 | 10,513,219 | | 2009 | 10,548,322 | | 2008 | 10,678,512 | | 2007 | 10,837,999 | | 2006 | 11,017,705 | | 2005 | 11,186,436 | | 2004 | 11,277,707 | | 2003 | 11,297,915 | | 2002 | 11,306,007 | | 2001 | 11,271,175 | | 2000 | 11,169,258 | | 1999 | 11,020,192 | | 1998 | 10,833,594 | | 1997 | 10,568,889 | | 1996 | 10,446,891 | | 1995 | 10,195,033 | | 1994 | 9,660,896 | | 1993 | 9,264,022 | | 1992 | 9,042,592 | | 1991 | 8,697,704 | | 1990 | 8,322,287 | | 1989 | 8,094,571 | | 1988 | 7,849,747 | | 1987 | 7,549,183 | | 1986 | 7,105,102 | | 1985 | 6,795,294 | | 1984 | 6,669,969 | | 1983 | 6,448,851 | | 1982 | 6,178,219 | | 1981 | 6,061,223 | | 1980 | 5,969,438 | | 1979 | 5,805,201 | | 1978 | 5,768,937 | | 1977 | 5,821,326 | | 1976 | 5,859,131 | | 1975 | 5,997,898 | | 1974 | 6,310,256 | | 1973 | 6,483,968 | | 1972 | 6,504,127 | | 1971 | 6,527,100 | | 1970 | 6,406,027 | | 1969 | 6,136,809 | | 1968 | 6,076,642 | | 1967 | 6,124,051 | | 1966 | 5,994,987 | | 1965 | 5,974,936 | | 1964 | 6,114,407 | | 1963 | 6,010,563 | | 1962 | 5,766,879 | | 1961 | 5,718,274 | | 1960 | 5,657,157 |
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