Year | Value | 2022 | 16,355,290 | 2021 | 15,980,485 | 2020 | 15,510,623 | 2019 | 15,064,440 | 2018 | 14,667,213 | 2017 | 14,307,487 | 2016 | 13,962,356 | 2015 | 13,633,174 | 2014 | 13,311,421 | 2013 | 12,968,647 | 2012 | 12,601,788 | 2011 | 12,248,803 | 2010 | 11,908,735 | 2009 | 11,580,758 | 2008 | 11,276,344 | 2007 | 11,001,749 | 2006 | 10,746,452 | 2005 | 10,492,944 | 2004 | 10,233,857 | 2003 | 9,951,804 | 2002 | 9,659,570 | 2001 | 9,381,627 | 2000 | 9,093,257 | 1999 | 8,793,875 | 1998 | 8,530,831 | 1997 | 8,308,487 | 1996 | 8,145,558 | 1995 | 8,069,115 | 1994 | 8,027,009 | 1993 | 8,015,943 | 1992 | 8,040,799 | 1991 | 8,002,200 | 1990 | 7,884,933 | 1989 | 7,672,203 | 1988 | 7,395,996 | 1987 | 7,108,153 | 1986 | 6,886,118 | 1985 | 6,764,064 | 1984 | 6,727,484 | 1983 | 6,743,998 | 1982 | 6,749,534 | 1981 | 6,709,436 | 1980 | 6,622,006 | 1979 | 6,474,235 | 1978 | 6,263,774 | 1977 | 6,023,118 | 1976 | 5,789,660 | 1975 | 5,568,451 | 1974 | 5,366,957 | 1973 | 5,191,569 | 1972 | 5,023,272 | 1971 | 4,860,156 | 1970 | 4,736,005 | 1969 | 4,663,595 | 1968 | 4,611,868 | 1967 | 4,593,557 | 1966 | 4,597,941 | 1965 | 4,583,050 | 1964 | 4,530,338 | 1963 | 4,448,901 | 1962 | 4,360,974 | 1961 | 4,276,091 | 1960 | 4,181,984 |
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