Year | Value | 2022 | 17,700,982 | 2021 | 17,533,044 | 2020 | 17,441,500 | 2019 | 17,344,874 | 2018 | 17,231,624 | 2017 | 17,131,296 | 2016 | 17,030,314 | 2015 | 16,939,923 | 2014 | 16,865,008 | 2013 | 16,804,432 | 2012 | 16,754,962 | 2011 | 16,693,074 | 2010 | 16,615,394 | 2009 | 16,530,388 | 2008 | 16,445,593 | 2007 | 16,381,696 | 2006 | 16,346,101 | 2005 | 16,319,868 | 2004 | 16,281,779 | 2003 | 16,225,302 | 2002 | 16,148,929 | 2001 | 16,046,180 | 2000 | 15,925,513 | 1999 | 15,812,088 | 1998 | 15,707,209 | 1997 | 15,610,650 | 1996 | 15,530,498 | 1995 | 15,459,006 | 1994 | 15,382,838 | 1993 | 15,290,368 | 1992 | 15,184,166 | 1991 | 15,069,798 | 1990 | 14,951,510 | 1989 | 14,848,907 | 1988 | 14,760,094 | 1987 | 14,665,037 | 1986 | 14,572,278 | 1985 | 14,491,632 | 1984 | 14,424,211 | 1983 | 14,367,070 | 1982 | 14,312,690 | 1981 | 14,247,208 | 1980 | 14,149,800 | 1979 | 14,038,270 | 1978 | 13,941,700 | 1977 | 13,856,185 | 1976 | 13,774,037 | 1975 | 13,666,335 | 1974 | 13,545,056 | 1973 | 13,439,322 | 1972 | 13,328,593 | 1971 | 13,194,497 | 1970 | 13,038,526 | 1969 | 12,877,984 | 1968 | 12,729,721 | 1967 | 12,598,201 | 1966 | 12,456,251 | 1965 | 12,294,732 | 1964 | 12,127,120 | 1963 | 11,965,966 | 1962 | 11,805,689 | 1961 | 11,638,712 | 1960 | 11,486,631 |
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