Year | Value | 2022 | 37,200,465 | 2021 | 37,837,260 | 2020 | 38,254,752 | 2019 | 38,462,796 | 2018 | 38,622,475 | 2017 | 38,785,967 | 2016 | 38,947,818 | 2015 | 39,092,740 | 2014 | 39,210,929 | 2013 | 39,310,807 | 2012 | 39,410,425 | 2011 | 39,519,532 | 2010 | 39,652,932 | 2009 | 39,838,803 | 2008 | 39,979,949 | 2007 | 40,210,586 | 2006 | 40,443,275 | 2005 | 40,611,197 | 2004 | 40,780,148 | 2003 | 40,941,382 | 2002 | 41,119,861 | 2001 | 41,454,011 | 2000 | 41,778,237 | 1999 | 41,982,938 | 1998 | 42,019,601 | 1997 | 42,058,345 | 1996 | 42,110,439 | 1995 | 42,177,731 | 1994 | 42,207,856 | 1993 | 42,184,309 | 1992 | 42,179,934 | 1991 | 42,416,617 | 1990 | 42,755,874 | 1989 | 43,009,719 | 1988 | 43,287,672 | 1987 | 43,556,426 | 1986 | 43,785,677 | 1985 | 44,012,261 | 1984 | 44,239,869 | 1983 | 44,450,473 | 1982 | 44,644,943 | 1981 | 44,818,701 | 1980 | 45,060,451 | 1979 | 45,447,656 | 1978 | 45,887,515 | 1977 | 46,339,977 | 1976 | 46,707,268 | 1975 | 47,012,972 | 1974 | 47,314,974 | 1973 | 47,658,493 | 1972 | 48,024,446 | 1971 | 48,396,177 | 1970 | 48,793,751 | 1969 | 49,091,160 | 1968 | 49,295,856 | 1967 | 49,426,266 | 1966 | 49,510,175 | 1965 | 49,742,764 | 1964 | 50,000,758 | 1963 | 50,171,639 | 1962 | 50,348,488 | 1961 | 50,536,773 | 1960 | 50,720,764 |
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