Year | Value | 2022 | 54,179,306 | 2021 | 53,798,084 | 2020 | 53,423,198 | 2019 | 53,040,212 | 2018 | 52,666,014 | 2017 | 52,288,341 | 2016 | 51,892,349 | 2015 | 51,483,949 | 2014 | 51,072,436 | 2013 | 50,648,334 | 2012 | 50,218,185 | 2011 | 49,794,522 | 2010 | 49,390,988 | 2009 | 49,015,836 | 2008 | 48,729,486 | 2007 | 48,445,647 | 2006 | 48,088,274 | 2005 | 47,724,471 | 2004 | 47,338,446 | 2003 | 46,924,293 | 2002 | 46,480,230 | 2001 | 46,014,826 | 2000 | 45,538,332 | 1999 | 45,041,636 | 1998 | 44,516,185 | 1997 | 43,972,046 | 1996 | 43,423,369 | 1995 | 42,880,186 | 1994 | 42,337,109 | 1993 | 41,788,302 | 1992 | 41,237,813 | 1991 | 40,680,533 | 1990 | 40,099,553 | 1989 | 39,489,419 | 1988 | 38,868,270 | 1987 | 38,233,171 | 1986 | 37,572,340 | 1985 | 36,881,020 | 1984 | 36,159,838 | 1983 | 35,424,262 | 1982 | 34,742,586 | 1981 | 34,110,098 | 1980 | 33,465,781 | 1979 | 32,821,779 | 1978 | 32,185,601 | 1977 | 31,554,598 | 1976 | 30,941,375 | 1975 | 30,344,276 | 1974 | 29,751,936 | 1973 | 29,165,356 | 1972 | 28,551,949 | 1971 | 27,914,953 | 1970 | 27,284,112 | 1969 | 26,659,479 | 1968 | 26,044,111 | 1967 | 25,440,029 | 1966 | 24,854,704 | 1965 | 24,286,878 | 1964 | 23,737,818 | 1963 | 23,210,687 | 1962 | 22,699,703 | 1961 | 22,203,109 | 1960 | 21,720,697 |
|