Year | Value | 2022 | 22,040,987 | 2021 | 21,680,725 | 2020 | 21,318,767 | 2019 | 20,948,465 | 2018 | 20,564,404 | 2017 | 20,175,233 | 2016 | 19,783,015 | 2015 | 19,390,923 | 2014 | 19,004,433 | 2013 | 18,629,532 | 2012 | 18,264,572 | 2011 | 17,911,362 | 2010 | 17,573,708 | 2009 | 17,249,096 | 2008 | 16,941,031 | 2007 | 16,653,361 | 2006 | 16,384,158 | 2005 | 16,150,274 | 2004 | 15,932,047 | 2003 | 15,709,725 | 2002 | 15,497,822 | 2001 | 15,288,132 | 2000 | 15,076,418 | 1999 | 14,863,283 | 1998 | 14,652,460 | 1997 | 14,450,097 | 1996 | 14,248,146 | 1995 | 14,015,501 | 1994 | 13,745,110 | 1993 | 13,455,737 | 1992 | 13,155,514 | 1991 | 12,851,476 | 1990 | 12,547,674 | 1989 | 12,238,273 | 1988 | 11,920,413 | 1987 | 11,596,648 | 1986 | 11,247,967 | 1985 | 10,875,691 | 1984 | 10,508,574 | 1983 | 10,154,790 | 1982 | 9,814,990 | 1981 | 9,491,758 | 1980 | 9,187,012 | 1979 | 8,902,127 | 1978 | 8,636,461 | 1977 | 8,388,820 | 1976 | 8,074,971 | 1975 | 7,690,343 | 1974 | 7,407,341 | 1973 | 7,227,074 | 1972 | 7,057,279 | 1971 | 6,896,041 | 1970 | 6,742,390 | 1969 | 6,593,391 | 1968 | 6,446,752 | 1967 | 6,302,990 | 1966 | 6,163,912 | 1965 | 6,061,383 | 1964 | 5,985,388 | 1963 | 5,903,048 | 1962 | 5,823,672 | 1961 | 5,747,020 | 1960 | 5,647,947 |
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