| Year | Value | | 2022 | 1,936,512 | | 2021 | 1,894,902 | | 2020 | 1,841,865 | | 2019 | 1,786,231 | | 2018 | 1,734,061 | | 2017 | 1,689,018 | | 2016 | 1,648,773 | | 2015 | 1,608,364 | | 2014 | 1,574,459 | | 2013 | 1,548,106 | | 2012 | 1,524,256 | | 2011 | 1,494,106 | | 2010 | 1,434,830 | | 2009 | 1,367,260 | | 2008 | 1,315,103 | | 2007 | 1,274,506 | | 2006 | 1,253,045 | | 2005 | 1,246,643 | | 2004 | 1,249,678 | | 2003 | 1,263,440 | | 2002 | 1,289,510 | | 2001 | 1,326,978 | | 2000 | 1,374,875 | | 1999 | 1,425,778 | | 1998 | 1,480,542 | | 1997 | 1,522,090 | | 1996 | 1,550,874 | | 1995 | 1,568,897 | | 1994 | 1,576,321 | | 1993 | 1,573,232 | | 1992 | 1,563,052 | | 1991 | 1,549,738 | | 1990 | 1,533,891 | | 1989 | 1,516,076 | | 1988 | 1,485,670 | | 1987 | 1,443,267 | | 1986 | 1,393,413 | | 1985 | 1,345,084 | | 1984 | 1,302,736 | | 1983 | 1,265,888 | | 1982 | 1,235,173 | | 1981 | 1,209,043 | | 1980 | 1,184,251 | | 1979 | 1,159,645 | | 1978 | 1,136,105 | | 1977 | 1,112,351 | | 1976 | 1,087,171 | | 1975 | 1,061,744 | | 1974 | 1,036,298 | | 1973 | 1,011,106 | | 1972 | 989,285 | | 1971 | 972,808 | | 1970 | 961,855 | | 1969 | 955,394 | | 1968 | 951,130 | | 1967 | 946,928 | | 1966 | 939,197 | | 1965 | 924,606 | | 1964 | 902,380 | | 1963 | 873,322 | | 1962 | 837,456 | | 1961 | 797,795 | | 1960 | 757,883 |
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