Year | Value | 2022 | 32,112,623 | 2021 | 32,810,587 | 2020 | 33,121,448 | 2019 | 33,244,714 | 2018 | 33,249,526 | 2017 | 33,141,573 | 2016 | 32,937,541 | 2015 | 32,758,572 | 2014 | 32,613,194 | 2013 | 32,408,051 | 2012 | 32,191,427 | 2011 | 32,056,911 | 2010 | 31,943,068 | 2009 | 31,796,398 | 2008 | 31,686,964 | 2007 | 31,609,915 | 2006 | 31,608,865 | 2005 | 31,586,469 | 2004 | 31,531,717 | 2003 | 31,549,219 | 2002 | 31,572,840 | 2001 | 31,542,383 | 2000 | 31,602,884 | 1999 | 31,814,572 | 1998 | 32,091,215 | 1997 | 32,352,519 | 1996 | 32,647,562 | 1995 | 32,938,936 | 1994 | 33,101,808 | 1993 | 33,060,412 | 1992 | 32,924,475 | 1991 | 32,682,428 | 1990 | 32,309,405 | 1989 | 31,982,679 | 1988 | 31,638,407 | 1987 | 31,212,954 | 1986 | 30,767,941 | 1985 | 30,359,025 | 1984 | 30,016,166 | 1983 | 29,649,132 | 1982 | 29,236,418 | 1981 | 28,696,990 | 1980 | 27,529,907 | 1979 | 25,864,410 | 1978 | 24,271,276 | 1977 | 22,917,590 | 1976 | 22,212,999 | 1975 | 22,618,627 | 1974 | 23,777,066 | 1973 | 25,118,562 | 1972 | 26,411,381 | 1971 | 27,163,674 | 1970 | 27,220,403 | 1969 | 26,731,595 | 1968 | 25,878,905 | 1967 | 25,129,570 | 1966 | 24,686,384 | 1965 | 24,707,069 | 1964 | 25,117,339 | 1963 | 25,804,889 | 1962 | 26,393,770 | 1961 | 26,760,868 | 1960 | 26,912,317 |
|