| Year | Value | | 2022 | 95,432,173 | | 2021 | 91,919,998 | | 2020 | 87,911,407 | | 2019 | 83,312,349 | | 2018 | 79,104,095 | | 2017 | 75,368,151 | | 2016 | 72,318,266 | | 2015 | 70,526,173 | | 2014 | 69,454,393 | | 2013 | 68,453,063 | | 2012 | 67,649,963 | | 2011 | 66,785,483 | | 2010 | 65,666,201 | | 2009 | 64,367,787 | | 2008 | 63,041,255 | | 2007 | 61,582,332 | | 2006 | 60,092,409 | | 2005 | 58,844,980 | | 2004 | 57,888,852 | | 2003 | 56,943,456 | | 2002 | 55,923,356 | | 2001 | 54,773,213 | | 2000 | 53,316,050 | | 1999 | 51,608,385 | | 1998 | 49,864,653 | | 1997 | 48,071,474 | | 1996 | 46,332,522 | | 1995 | 44,791,125 | | 1994 | 43,225,499 | | 1993 | 41,360,998 | | 1992 | 39,461,930 | | 1991 | 37,792,590 | | 1990 | 36,353,121 | | 1989 | 35,479,914 | | 1988 | 35,290,523 | | 1987 | 35,425,542 | | 1986 | 35,509,406 | | 1985 | 35,395,294 | | 1984 | 34,957,062 | | 1983 | 34,269,792 | | 1982 | 33,526,886 | | 1981 | 32,758,511 | | 1980 | 31,983,959 | | 1979 | 31,152,085 | | 1978 | 30,267,735 | | 1977 | 29,424,764 | | 1976 | 28,612,508 | | 1975 | 27,793,214 | | 1974 | 26,946,956 | | 1973 | 26,095,170 | | 1972 | 25,239,928 | | 1971 | 24,419,087 | | 1970 | 23,662,670 | | 1969 | 22,991,572 | | 1968 | 22,338,775 | | 1967 | 21,667,544 | | 1966 | 21,043,935 | | 1965 | 20,501,169 | | 1964 | 20,060,105 | | 1963 | 19,766,617 | | 1962 | 19,564,162 | | 1961 | 19,385,491 | | 1960 | 19,259,717 |
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