Year | Value | 2022 | 218,542 | 2021 | 228,263 | 2020 | 233,953 | 2019 | 240,490 | 2018 | 245,519 | 2017 | 248,217 | 2016 | 249,957 | 2015 | 251,892 | 2014 | 253,617 | 2013 | 255,548 | 2012 | 259,067 | 2011 | 263,974 | 2010 | 269,066 | 2009 | 270,823 | 2008 | 271,004 | 2007 | 269,207 | 2006 | 264,513 | 2005 | 258,479 | 2004 | 254,374 | 2003 | 251,751 | 2002 | 249,775 | 2001 | 249,538 | 2000 | 251,251 | 1999 | 252,067 | 1998 | 252,407 | 1997 | 254,005 | 1996 | 256,812 | 1995 | 260,954 | 1994 | 268,220 | 1993 | 268,170 | 1992 | 264,349 | 1991 | 260,098 | 1990 | 257,048 | 1989 | 256,279 | 1988 | 259,503 | 1987 | 267,240 | 1986 | 274,680 | 1985 | 282,070 | 1984 | 292,519 | 1983 | 299,234 | 1982 | 300,396 | 1981 | 298,854 | 1980 | 292,486 | 1979 | 280,176 | 1978 | 268,975 | 1977 | 261,458 | 1976 | 257,730 | 1975 | 257,375 | 1974 | 261,281 | 1973 | 268,074 | 1972 | 276,069 | 1971 | 283,783 | 1970 | 291,172 | 1969 | 298,917 | 1968 | 305,666 | 1967 | 311,026 | 1966 | 314,749 | 1965 | 316,120 | 1964 | 315,998 | 1963 | 313,388 | 1962 | 308,155 | 1961 | 299,867 | 1960 | 289,390 |
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