Year Number 1970 238336.546875 1971 239324.03125 1972 251394.828125 1973 267226.125 1974 278709.1875 1975 299222.5625 1976 327786.96875 1977 346420 1978 376032.1875 1979 410337.34375 1980 452423.59375 1981 492124.34375 1982 522514.46875 1983 578811.3125 1984 621445.6875 1985 669255.375 1986 735187 1987 797388.6875 1988 853855.625 1989 871664.5625 1990 924517.75 1991 980246.1875 1992 1006502.625 1993 1053346.625 1994 1106602.5 1995 1166045.375 1996 1231471.75 1997 1304862 1998 1344235.375 1999 1379680 2000 1435981 2001 1490461.25 2002 1518808.875 2003 1616609.25 2004 1668999.125 2005 1730064.875 2006 1800476.625 2007 1877414.25 2008 1952999.875 2009 2055183.75 2010 2092063.5 2011 2165177 2012 2192282 2013 2195810.75 2014 2171990 2015 2217937 2016 2233755.25 2017 2250794.25 2018 2298930 2019 2281516.5 2020 2364178.25 2021 2369978 2022 2342418