Year | Value | 2022 | 61,166,382 | 2021 | 60,326,516 | 2020 | 59,392,264 | 2019 | 58,415,548 | 2018 | 58,078,262 | 2017 | 57,847,383 | 2016 | 54,888,140 | 2015 | 49,644,219 | 2014 | 44,527,582 | 2013 | 39,624,925 | 2012 | 36,740,969 | 2011 | 37,405,205 | 2010 | 39,812,945 | 2009 | 42,189,865 | 2008 | 43,442,029 | 2007 | 43,277,558 | 2006 | 42,522,177 | 2005 | 41,337,097 | 2004 | 39,536,275 | 2003 | 37,484,050 | 2002 | 35,131,636 | 2001 | 32,787,969 | 2000 | 30,645,562 | 1999 | 28,621,032 | 1998 | 26,950,530 | 1997 | 25,501,977 | 1996 | 24,467,612 | 1995 | 23,841,222 | 1994 | 23,384,249 | 1993 | 23,110,675 | 1992 | 23,038,865 | 1991 | 22,916,236 | 1990 | 22,802,188 | 1989 | 22,828,834 | 1988 | 22,837,942 | 1987 | 22,612,402 | 1986 | 22,163,167 | 1985 | 21,675,235 | 1984 | 21,156,793 | 1983 | 20,530,759 | 1982 | 19,947,637 | 1981 | 19,436,023 | 1980 | 18,951,483 | 1979 | 18,562,782 | 1978 | 18,125,492 | 1977 | 17,594,353 | 1976 | 17,196,278 | 1975 | 16,812,254 | 1974 | 16,288,267 | 1973 | 15,744,923 | 1972 | 15,327,865 | 1971 | 14,983,056 | 1970 | 14,642,020 | 1969 | 14,444,822 | 1968 | 14,389,908 | 1967 | 14,235,931 | 1966 | 13,934,428 | 1965 | 13,612,882 | 1964 | 13,348,930 | 1963 | 13,124,155 | 1962 | 12,946,383 | 1961 | 12,956,075 | 1960 | 13,164,540 |
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