Year | Value | 2022 | 12,254,134 | 2021 | 12,146,090 | 2020 | 12,142,886 | 2019 | 12,070,560 | 2018 | 12,026,887 | 2017 | 11,980,338 | 2016 | 11,941,870 | 2015 | 11,907,697 | 2014 | 11,921,296 | 2013 | 12,001,057 | 2012 | 12,143,173 | 2011 | 12,320,993 | 2010 | 12,478,621 | 2009 | 12,555,726 | 2008 | 12,552,512 | 2007 | 12,464,645 | 2006 | 12,325,747 | 2005 | 12,157,248 | 2004 | 11,980,560 | 2003 | 11,826,445 | 2002 | 11,703,570 | 2001 | 11,584,016 | 2000 | 11,476,008 | 1999 | 11,371,216 | 1998 | 11,247,633 | 1997 | 11,067,055 | 1996 | 10,821,705 | 1995 | 10,550,981 | 1994 | 10,297,889 | 1993 | 10,106,248 | 1992 | 10,006,939 | 1991 | 10,064,531 | 1990 | 10,248,957 | 1989 | 10,417,109 | 1988 | 10,541,954 | 1987 | 10,640,525 | 1986 | 10,683,219 | 1985 | 10,699,517 | 1984 | 10,816,822 | 1983 | 11,055,207 | 1982 | 11,342,007 | 1981 | 11,654,357 | 1980 | 11,927,238 | 1979 | 12,075,959 | 1978 | 12,113,658 | 1977 | 12,120,338 | 1976 | 12,072,171 | 1975 | 11,947,239 | 1974 | 11,774,157 | 1973 | 11,583,074 | 1972 | 11,330,663 | 1971 | 11,230,533 | 1970 | 10,935,462 | 1969 | 10,371,719 | 1968 | 9,977,559 | 1967 | 9,767,930 | 1966 | 9,450,811 | 1965 | 9,121,293 | 1964 | 8,910,767 | 1963 | 8,621,782 | 1962 | 8,230,258 | 1961 | 7,676,951 | 1960 | 7,286,111 |
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