Year | Value | 2022 | 55,402,736 | 2021 | 55,053,076 | 2020 | 54,715,704 | 2019 | 54,388,182 | 2018 | 54,024,861 | 2017 | 53,654,868 | 2016 | 53,323,902 | 2015 | 53,009,026 | 2014 | 52,647,802 | 2013 | 52,230,911 | 2012 | 51,793,062 | 2011 | 51,375,729 | 2010 | 50,963,811 | 2009 | 50,550,197 | 2008 | 50,131,182 | 2007 | 49,694,312 | 2006 | 49,233,640 | 2005 | 48,737,209 | 2004 | 48,218,178 | 2003 | 47,708,761 | 2002 | 47,215,240 | 2001 | 46,717,151 | 2000 | 46,221,663 | 1999 | 45,749,812 | 1998 | 45,395,596 | 1997 | 45,127,383 | 1996 | 44,866,400 | 1995 | 44,605,346 | 1994 | 44,343,217 | 1993 | 44,076,650 | 1992 | 43,784,946 | 1991 | 43,466,704 | 1990 | 42,985,584 | 1989 | 42,718,166 | 1988 | 42,457,921 | 1987 | 42,190,286 | 1986 | 41,923,864 | 1985 | 41,663,212 | 1984 | 41,404,847 | 1983 | 41,154,602 | 1982 | 40,893,397 | 1981 | 40,615,768 | 1980 | 40,343,633 | 1979 | 40,085,640 | 1978 | 39,851,203 | 1977 | 39,618,922 | 1976 | 39,393,968 | 1975 | 39,172,735 | 1974 | 38,806,179 | 1973 | 38,334,453 | 1972 | 37,825,586 | 1971 | 37,291,038 | 1970 | 36,752,571 | 1969 | 36,223,125 | 1968 | 35,692,859 | 1967 | 34,910,161 | 1966 | 33,987,676 | 1965 | 33,054,437 | 1964 | 32,114,729 | 1963 | 31,179,854 | 1962 | 30,271,423 | 1961 | 29,526,489 | 1960 | 28,866,975 |
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