Year | Value | 2022 | 169,810 | 2021 | 180,490 | 2020 | 186,258 | 2019 | 186,799 | 2018 | 181,762 | 2017 | 178,143 | 2016 | 179,804 | 2015 | 184,370 | 2014 | 192,041 | 2013 | 202,161 | 2012 | 208,476 | 2011 | 209,579 | 2010 | 211,442 | 2009 | 213,451 | 2008 | 217,552 | 2007 | 223,863 | 2006 | 230,213 | 2005 | 235,877 | 2004 | 242,382 | 2003 | 247,523 | 2002 | 250,492 | 2001 | 252,390 | 2000 | 254,597 | 1999 | 256,708 | 1998 | 259,090 | 1997 | 263,366 | 1996 | 269,157 | 1995 | 274,103 | 1994 | 280,723 | 1993 | 280,627 | 1992 | 277,988 | 1991 | 272,421 | 1990 | 267,499 | 1989 | 265,599 | 1988 | 265,074 | 1987 | 264,888 | 1986 | 266,363 | 1985 | 269,103 | 1984 | 270,722 | 1983 | 271,125 | 1982 | 271,874 | 1981 | 272,874 | 1980 | 274,590 | 1979 | 275,637 | 1978 | 273,698 | 1977 | 268,711 | 1976 | 262,936 | 1975 | 257,574 | 1974 | 256,569 | 1973 | 260,014 | 1972 | 268,439 | 1971 | 276,992 | 1970 | 286,233 | 1969 | 299,066 | 1968 | 308,309 | 1967 | 311,700 | 1966 | 312,250 | 1965 | 307,284 | 1964 | 295,505 | 1963 | 284,485 | 1962 | 277,187 | 1961 | 275,263 | 1960 | 275,415 |
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