Year | Value | 2022 | 37,711,273 | 2021 | 38,339,131 | 2020 | 39,120,722 | 2019 | 39,732,436 | 2018 | 40,206,737 | 2017 | 40,514,152 | 2016 | 40,707,699 | 2015 | 40,847,809 | 2014 | 41,011,106 | 2013 | 41,206,935 | 2012 | 41,374,497 | 2011 | 41,437,504 | 2010 | 41,430,961 | 2009 | 41,326,973 | 2008 | 41,167,472 | 2007 | 40,976,863 | 2006 | 40,916,930 | 2005 | 41,009,103 | 2004 | 41,138,351 | 2003 | 41,229,037 | 2002 | 41,334,483 | 2001 | 41,449,380 | 2000 | 41,546,728 | 1999 | 41,695,958 | 1998 | 41,934,814 | 1997 | 42,241,418 | 1996 | 42,589,581 | 1995 | 42,931,559 | 1994 | 43,157,618 | 1993 | 43,218,713 | 1992 | 43,131,596 | 1991 | 42,990,101 | 1990 | 42,830,926 | 1989 | 42,706,260 | 1988 | 42,663,397 | 1987 | 42,730,438 | 1986 | 42,896,430 | 1985 | 43,120,545 | 1984 | 43,333,007 | 1983 | 43,458,312 | 1982 | 43,470,110 | 1981 | 43,439,933 | 1980 | 43,425,480 | 1979 | 43,496,089 | 1978 | 43,673,057 | 1977 | 43,939,095 | 1976 | 44,331,221 | 1975 | 44,763,195 | 1974 | 45,049,147 | 1973 | 45,263,975 | 1972 | 45,430,280 | 1971 | 45,386,185 | 1970 | 45,366,465 | 1969 | 45,667,504 | 1968 | 45,916,602 | 1967 | 46,033,116 | 1966 | 46,128,580 | 1965 | 46,117,865 | 1964 | 45,848,397 | 1963 | 45,418,791 | 1962 | 44,951,317 | 1961 | 44,445,457 | 1960 | 43,952,190 |
|