Year | Value | 2022 | 578,813 | 2021 | 581,511 | 2020 | 578,235 | 2019 | 576,895 | 2018 | 572,198 | 2017 | 561,278 | 2016 | 551,594 | 2015 | 539,175 | 2014 | 525,277 | 2013 | 517,236 | 2012 | 512,356 | 2011 | 501,424 | 2010 | 489,482 | 2009 | 478,179 | 2008 | 463,337 | 2007 | 448,004 | 2006 | 431,768 | 2005 | 414,481 | 2004 | 398,889 | 2003 | 383,716 | 2002 | 367,437 | 2001 | 352,302 | 2000 | 339,705 | 1999 | 329,072 | 1998 | 319,678 | 1997 | 311,711 | 1996 | 304,588 | 1995 | 298,144 | 1994 | 292,275 | 1993 | 286,660 | 1992 | 281,489 | 1991 | 277,422 | 1990 | 274,548 | 1989 | 272,734 | 1988 | 271,738 | 1987 | 271,025 | 1986 | 269,996 | 1985 | 268,301 | 1984 | 266,040 | 1983 | 263,144 | 1982 | 259,556 | 1981 | 255,532 | 1980 | 251,237 | 1979 | 246,530 | 1978 | 241,251 | 1977 | 235,703 | 1976 | 230,168 | 1975 | 224,679 | 1974 | 219,290 | 1973 | 214,074 | 1972 | 208,959 | 1971 | 203,604 | 1970 | 197,960 | 1969 | 192,310 | 1968 | 186,570 | 1967 | 180,705 | 1966 | 175,062 | 1965 | 169,822 | 1964 | 164,951 | 1963 | 160,502 | 1962 | 156,343 | 1961 | 152,057 | 1960 | 147,471 |
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