Year | Value | 2022 | 51,610,899 | 2021 | 52,324,701 | 2020 | 52,711,617 | 2019 | 52,831,512 | 2018 | 52,923,890 | 2017 | 53,049,259 | 2016 | 53,199,616 | 2015 | 53,355,228 | 2014 | 53,496,159 | 2013 | 53,620,480 | 2012 | 53,744,949 | 2011 | 53,881,381 | 2010 | 54,023,740 | 2009 | 54,232,892 | 2008 | 54,346,886 | 2007 | 54,545,043 | 2006 | 54,748,712 | 2005 | 54,890,704 | 2004 | 55,044,141 | 2003 | 55,196,253 | 2002 | 55,366,555 | 2001 | 55,716,493 | 2000 | 56,124,654 | 1999 | 56,433,431 | 1998 | 56,491,692 | 1997 | 56,554,776 | 1996 | 56,630,040 | 1995 | 56,721,318 | 1994 | 56,770,720 | 1993 | 56,752,802 | 1992 | 56,760,212 | 1991 | 56,915,906 | 1990 | 57,031,966 | 1989 | 57,042,030 | 1988 | 56,963,966 | 1987 | 56,749,148 | 1986 | 56,498,923 | 1985 | 56,243,041 | 1984 | 55,981,030 | 1983 | 55,699,987 | 1982 | 55,407,594 | 1981 | 55,097,607 | 1980 | 54,794,696 | 1979 | 54,492,822 | 1978 | 54,178,321 | 1977 | 53,817,906 | 1976 | 53,389,856 | 1975 | 52,922,189 | 1974 | 52,456,829 | 1973 | 52,039,054 | 1972 | 51,656,511 | 1971 | 51,290,509 | 1970 | 51,035,391 | 1969 | 50,768,203 | 1968 | 50,406,350 | 1967 | 49,986,920 | 1966 | 49,542,143 | 1965 | 49,202,597 | 1964 | 48,857,715 | 1963 | 48,436,887 | 1962 | 48,041,545 | 1961 | 47,676,149 | 1960 | 47,283,873 |
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