Year | Value | 2022 | 216,610 | 2021 | 236,348 | 2020 | 241,981 | 2019 | 244,878 | 2018 | 247,009 | 2017 | 249,025 | 2016 | 250,928 | 2015 | 252,722 | 2014 | 256,282 | 2013 | 260,455 | 2012 | 265,111 | 2011 | 271,497 | 2010 | 278,341 | 2009 | 284,416 | 2008 | 287,992 | 2007 | 286,095 | 2006 | 281,535 | 2005 | 278,814 | 2004 | 277,089 | 2003 | 277,149 | 2002 | 277,260 | 2001 | 278,343 | 2000 | 278,045 | 1999 | 274,220 | 1998 | 271,124 | 1997 | 271,725 | 1996 | 276,765 | 1995 | 282,167 | 1994 | 284,802 | 1993 | 285,577 | 1992 | 288,871 | 1991 | 293,552 | 1990 | 297,949 | 1989 | 305,624 | 1988 | 312,567 | 1987 | 314,865 | 1986 | 315,098 | 1985 | 315,694 | 1984 | 318,330 | 1983 | 321,869 | 1982 | 325,651 | 1981 | 329,465 | 1980 | 330,877 | 1979 | 326,518 | 1978 | 317,688 | 1977 | 306,601 | 1976 | 294,223 | 1975 | 283,245 | 1974 | 275,487 | 1973 | 271,421 | 1972 | 271,405 | 1971 | 274,820 | 1970 | 281,729 | 1969 | 292,046 | 1968 | 303,783 | 1967 | 314,328 | 1966 | 321,958 | 1965 | 325,933 | 1964 | 325,997 | 1963 | 323,531 | 1962 | 321,406 | 1961 | 321,867 | 1960 | 325,250 |
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