| Year | Value | | 2023 | 6,430,370 | | 2022 | 6,465,097 | | 2021 | 6,877,743 | | 2020 | 6,934,015 | | 2019 | 6,975,761 | | 2018 | 7,025,037 | | 2017 | 7,075,947 | | 2016 | 7,127,822 | | 2015 | 7,177,991 | | 2014 | 7,223,938 | | 2013 | 7,265,115 | | 2012 | 7,305,888 | | 2011 | 7,348,328 | | 2010 | 7,395,599 | | 2009 | 7,444,443 | | 2008 | 7,492,561 | | 2007 | 7,545,338 | | 2006 | 7,601,022 | | 2005 | 7,658,972 | | 2004 | 7,716,860 | | 2003 | 7,775,327 | | 2002 | 7,837,161 | | 2001 | 8,009,142 | | 2000 | 8,170,172 | | 1999 | 8,210,624 | | 1998 | 8,256,786 | | 1997 | 8,312,068 | | 1996 | 8,362,826 | | 1995 | 8,406,067 | | 1994 | 8,443,591 | | 1993 | 8,472,313 | | 1992 | 8,540,164 | | 1991 | 8,632,367 | | 1990 | 8,718,289 | | 1989 | 8,876,972 | | 1988 | 8,981,446 | | 1987 | 8,971,359 | | 1986 | 8,958,171 | | 1985 | 8,960,547 | | 1984 | 8,960,679 | | 1983 | 8,939,738 | | 1982 | 8,917,457 | | 1981 | 8,891,117 | | 1980 | 8,861,535 | | 1979 | 8,825,940 | | 1978 | 8,814,032 | | 1977 | 8,804,183 | | 1976 | 8,758,599 | | 1975 | 8,720,742 | | 1974 | 8,678,745 |
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