| Year | Value | | 2022 | 9,442,885 | | 2021 | 9,136,399 | | 2020 | 9,012,624 | | 2019 | 8,890,215 | | 2018 | 8,768,025 | | 2017 | 8,644,724 | | 2016 | 8,518,088 | | 2015 | 8,388,576 | | 2014 | 8,259,233 | | 2013 | 8,130,680 | | 2012 | 8,007,578 | | 2011 | 7,888,949 | | 2010 | 7,769,735 | | 2009 | 7,654,441 | | 2008 | 7,499,747 | | 2007 | 7,357,674 | | 2006 | 7,273,015 | | 2005 | 7,197,692 | | 2004 | 7,135,860 | | 2003 | 7,088,542 | | 2002 | 7,066,960 | | 2001 | 7,069,936 | | 2000 | 7,086,252 | | 1999 | 7,112,897 | | 1998 | 7,193,887 | | 1997 | 7,337,235 | | 1996 | 7,469,916 | | 1995 | 7,596,074 | | 1994 | 7,763,870 | | 1993 | 7,883,990 | | 1992 | 7,914,247 | | 1991 | 7,918,734 | | 1990 | 7,865,151 | | 1989 | 7,812,899 | | 1988 | 7,907,389 | | 1987 | 7,753,235 | | 1986 | 7,598,172 | | 1985 | 7,452,535 | | 1984 | 7,317,926 | | 1983 | 7,186,404 | | 1982 | 7,061,547 | | 1981 | 6,945,269 | | 1980 | 6,835,318 | | 1979 | 6,730,382 | | 1978 | 6,629,127 | | 1977 | 6,528,154 | | 1976 | 6,432,493 | | 1975 | 6,343,002 | | 1974 | 6,254,638 | | 1973 | 6,168,390 | | 1972 | 6,084,470 | | 1971 | 6,006,292 | | 1970 | 5,922,297 | | 1969 | 5,815,993 | | 1968 | 5,688,922 | | 1967 | 5,550,907 | | 1966 | 5,409,444 | | 1965 | 5,264,588 | | 1964 | 5,115,984 | | 1963 | 4,964,007 | | 1962 | 4,809,109 | | 1961 | 4,653,247 | | 1960 | 4,497,817 |
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