Year | Value | 2022 | 41,321,809 | 2021 | 43,132,122 | 2020 | 46,190,690 | 2019 | 49,962,592 | 2018 | 53,095,074 | 2017 | 55,997,397 | 2016 | 58,282,734 | 2015 | 58,278,319 | 2014 | 56,613,212 | 2013 | 54,797,742 | 2012 | 53,212,270 | 2011 | 51,852,896 | 2010 | 50,656,071 | 2009 | 49,802,626 | 2008 | 49,047,243 | 2007 | 47,649,952 | 2006 | 46,358,095 | 2005 | 46,217,751 | 2004 | 47,198,582 | 2003 | 49,528,995 | 2002 | 52,648,036 | 2001 | 55,788,205 | 2000 | 58,919,380 | 1999 | 61,413,529 | 1998 | 62,849,342 | 1997 | 62,938,553 | 1996 | 62,101,002 | 1995 | 61,219,100 | 1994 | 60,285,964 | 1993 | 59,998,256 | 1992 | 59,797,931 | 1991 | 56,774,253 | 1990 | 51,475,149 | 1989 | 46,348,204 | 1988 | 41,398,963 | 1987 | 38,530,834 | 1986 | 39,322,196 | 1985 | 41,878,560 | 1984 | 44,414,805 | 1983 | 45,807,395 | 1982 | 45,756,155 | 1981 | 45,102,480 | 1980 | 44,017,626 | 1979 | 42,201,591 | 1978 | 39,924,818 | 1977 | 37,172,375 | 1976 | 34,406,663 | 1975 | 31,897,948 | 1974 | 29,564,343 | 1973 | 27,678,794 | 1972 | 26,160,205 | 1971 | 25,108,316 | 1970 | 24,366,170 | 1969 | 23,821,730 | 1968 | 23,493,440 | 1967 | 23,349,796 | 1966 | 23,218,130 | 1965 | 23,198,041 | 1964 | 23,485,231 | 1963 | 23,882,421 | 1962 | 24,001,862 | 1961 | 23,882,150 | 1960 | 23,787,935 |
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