Year | Value | 2022 | 16,767,842 | 2021 | 16,589,023 | 2020 | 16,396,860 | 2019 | 16,207,746 | 2018 | 16,025,238 | 2017 | 15,830,689 | 2016 | 15,624,584 | 2015 | 15,417,523 | 2014 | 15,210,817 | 2013 | 14,999,683 | 2012 | 14,786,640 | 2011 | 14,573,885 | 2010 | 14,363,532 | 2009 | 14,155,740 | 2008 | 13,943,888 | 2007 | 13,714,791 | 2006 | 13,477,779 | 2005 | 13,246,583 | 2004 | 13,016,371 | 2003 | 12,787,710 | 2002 | 12,561,779 | 2001 | 12,338,192 | 2000 | 12,118,841 | 1999 | 11,899,006 | 1998 | 11,669,077 | 1997 | 11,431,569 | 1996 | 11,182,612 | 1995 | 10,919,528 | 1994 | 10,636,353 | 1993 | 10,243,550 | 1992 | 9,718,215 | 1991 | 9,259,362 | 1990 | 8,910,808 | 1989 | 8,570,928 | 1988 | 8,269,780 | 1987 | 7,975,597 | 1986 | 7,661,317 | 1985 | 7,376,090 | 1984 | 7,133,899 | 1983 | 6,881,962 | 1982 | 6,619,699 | 1981 | 6,364,472 | 1980 | 6,198,959 | 1979 | 6,051,808 | 1978 | 5,961,193 | 1977 | 6,040,197 | 1976 | 6,307,122 | 1975 | 6,727,922 | 1974 | 6,913,408 | 1973 | 6,852,360 | 1972 | 6,766,289 | 1971 | 6,696,324 | 1970 | 6,708,525 | 1969 | 6,679,708 | 1968 | 6,553,109 | 1967 | 6,426,445 | 1966 | 6,299,230 | 1965 | 6,170,727 | 1964 | 6,040,847 | 1963 | 5,913,680 | 1962 | 5,788,854 | 1961 | 5,664,654 | 1960 | 5,541,676 |
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