Year | Value | 2022 | 13,097,451 | 2021 | 13,512,517 | 2020 | 13,851,592 | 2019 | 14,192,595 | 2018 | 14,442,697 | 2017 | 14,593,810 | 2016 | 14,588,865 | 2015 | 14,407,102 | 2014 | 14,174,001 | 2013 | 13,954,088 | 2012 | 13,696,162 | 2011 | 13,388,991 | 2010 | 13,079,227 | 2009 | 12,752,879 | 2008 | 12,398,263 | 2007 | 12,092,525 | 2006 | 11,901,620 | 2005 | 11,775,796 | 2004 | 11,677,815 | 2003 | 11,625,486 | 2002 | 11,705,438 | 2001 | 11,921,166 | 2000 | 12,214,547 | 1999 | 12,556,675 | 1998 | 12,917,206 | 1997 | 13,281,177 | 1996 | 13,689,585 | 1995 | 14,150,255 | 1994 | 14,669,797 | 1993 | 15,247,638 | 1992 | 15,866,886 | 1991 | 16,415,617 | 1990 | 16,793,633 | 1989 | 17,040,891 | 1988 | 17,136,881 | 1987 | 17,018,890 | 1986 | 16,752,311 | 1985 | 16,469,175 | 1984 | 16,191,100 | 1983 | 15,880,529 | 1982 | 15,614,189 | 1981 | 15,440,312 | 1980 | 15,302,155 | 1979 | 15,172,060 | 1978 | 15,055,349 | 1977 | 14,936,770 | 1976 | 14,775,255 | 1975 | 14,579,983 | 1974 | 14,370,900 | 1973 | 14,207,368 | 1972 | 14,061,193 | 1971 | 13,937,419 | 1970 | 13,875,207 | 1969 | 13,924,553 | 1968 | 14,094,651 | 1967 | 14,319,986 | 1966 | 14,616,405 | 1965 | 14,996,828 | 1964 | 15,352,786 | 1963 | 15,531,098 | 1962 | 15,558,763 | 1961 | 15,470,523 | 1960 | 15,305,764 |
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