Year | Value | 2022 | 254,394 | 2021 | 254,549 | 2020 | 249,592 | 2019 | 246,277 | 2018 | 244,293 | 2017 | 242,928 | 2016 | 243,567 | 2015 | 245,950 | 2014 | 246,937 | 2013 | 247,237 | 2012 | 248,346 | 2011 | 250,111 | 2010 | 253,215 | 2009 | 255,237 | 2008 | 257,585 | 2007 | 259,821 | 2006 | 263,194 | 2005 | 269,069 | 2004 | 278,561 | 2003 | 290,063 | 2002 | 301,933 | 2001 | 308,381 | 2000 | 310,921 | 1999 | 313,681 | 1998 | 311,928 | 1997 | 305,471 | 1996 | 298,978 | 1995 | 290,055 | 1994 | 279,404 | 1993 | 265,162 | 1992 | 255,838 | 1991 | 252,284 | 1990 | 254,009 | 1989 | 258,511 | 1988 | 265,048 | 1987 | 271,872 | 1986 | 277,703 | 1985 | 282,470 | 1984 | 287,261 | 1983 | 290,879 | 1982 | 293,039 | 1981 | 293,462 | 1980 | 292,127 | 1979 | 290,355 | 1978 | 287,924 | 1977 | 285,114 | 1976 | 281,856 | 1975 | 277,953 | 1974 | 273,814 | 1973 | 268,123 | 1972 | 260,806 | 1971 | 251,486 | 1970 | 238,815 | 1969 | 221,943 | 1968 | 200,190 | 1967 | 174,991 | 1966 | 150,534 | 1965 | 132,873 | 1964 | 126,831 | 1963 | 133,014 | 1962 | 149,261 | 1961 | 171,087 | 1960 | 191,235 |
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