Year | Value | 2022 | 30,477,139 | 2021 | 29,953,537 | 2020 | 29,401,712 | 2019 | 28,764,776 | 2018 | 28,103,094 | 2017 | 27,456,414 | 2016 | 26,818,201 | 2015 | 26,185,277 | 2014 | 25,557,482 | 2013 | 24,903,645 | 2012 | 24,196,942 | 2011 | 23,446,982 | 2010 | 22,666,716 | 2009 | 21,867,890 | 2008 | 20,928,811 | 2007 | 19,883,140 | 2006 | 18,890,110 | 2005 | 17,945,044 | 2004 | 17,049,563 | 2003 | 16,364,167 | 2002 | 15,883,370 | 2001 | 15,458,042 | 2000 | 15,102,522 | 1999 | 14,819,969 | 1998 | 14,609,550 | 1997 | 14,443,596 | 1996 | 14,273,425 | 1995 | 14,069,046 | 1994 | 13,827,297 | 1993 | 13,542,184 | 1992 | 13,219,569 | 1991 | 12,892,250 | 1990 | 12,576,484 | 1989 | 12,259,595 | 1988 | 11,931,233 | 1987 | 11,601,036 | 1986 | 11,279,000 | 1985 | 10,970,375 | 1984 | 10,676,866 | 1983 | 10,400,515 | 1982 | 10,143,856 | 1981 | 9,905,969 | 1980 | 9,684,504 | 1979 | 9,480,336 | 1978 | 9,295,090 | 1977 | 9,123,341 | 1976 | 8,957,412 | 1975 | 8,792,081 | 1974 | 8,626,431 | 1973 | 8,459,593 | 1972 | 8,295,442 | 1971 | 8,145,921 | 1970 | 8,014,154 | 1969 | 7,896,484 | 1968 | 7,795,792 | 1967 | 7,701,409 | 1966 | 7,579,142 | 1965 | 7,407,256 | 1964 | 7,186,538 | 1963 | 6,912,251 | 1962 | 6,612,047 | 1961 | 6,348,345 | 1960 | 6,159,498 |
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