Year | Value | 2022 | 42,234,940 | 2021 | 42,189,154 | 2020 | 42,224,765 | 2019 | 42,249,963 | 2018 | 42,559,879 | 2017 | 42,462,869 | 2016 | 42,351,339 | 2015 | 42,247,229 | 2014 | 42,109,853 | 2013 | 41,548,775 | 2012 | 40,894,259 | 2011 | 40,641,670 | 2010 | 40,502,481 | 2009 | 40,308,358 | 2008 | 40,056,298 | 2007 | 39,722,857 | 2006 | 39,454,178 | 2005 | 39,267,369 | 2004 | 39,006,818 | 2003 | 38,686,985 | 2002 | 38,447,500 | 2001 | 38,333,314 | 2000 | 38,277,624 | 1999 | 38,226,137 | 1998 | 38,185,563 | 1997 | 38,140,443 | 1996 | 38,086,153 | 1995 | 38,041,344 | 1994 | 38,006,634 | 1993 | 37,964,793 | 1992 | 37,907,512 | 1991 | 37,861,339 | 1990 | 37,846,480 | 1989 | 37,826,147 | 1988 | 37,809,110 | 1987 | 37,802,166 | 1986 | 37,809,627 | 1985 | 37,818,886 | 1984 | 37,819,273 | 1983 | 37,822,134 | 1982 | 37,819,718 | 1981 | 37,764,025 | 1980 | 37,607,540 | 1979 | 37,418,639 | 1978 | 37,198,851 | 1977 | 36,955,192 | 1976 | 36,687,131 | 1975 | 36,393,136 | 1974 | 36,065,654 | 1973 | 35,720,365 | 1972 | 35,369,083 | 1971 | 35,012,585 | 1970 | 34,592,379 | 1969 | 34,152,929 | 1968 | 33,703,021 | 1967 | 33,233,152 | 1966 | 32,737,193 | 1965 | 32,227,841 | 1964 | 31,702,827 | 1963 | 31,188,380 | 1962 | 30,708,292 | 1961 | 30,249,038 | 1960 | 29,799,044 |
|