Year Number 1970 374939.46875 1971 403202.71875 1972 459995.78125 1973 497819.28125 1974 590816.875 1975 628578.8125 1976 685386.8125 1977 738797 1978 765293.625 1979 788861 1980 804643.0625 1981 824585.0625 1982 848197.125 1983 872457.9375 1984 902997.1875 1985 934010.5 1986 982827.125 1987 1034877.6875 1988 1078838.875 1989 1112409 1990 1146200.5 1991 1186356.5 1992 1222799.375 1993 1250111.625 1994 1293593.125 1995 1338761.5 1996 1399377.125 1997 1428039 1998 1527507.125 1999 1606998.5 2000 1643444.375 2001 1572686.125 2002 1959310.75 2003 2090649.25 2004 2166927 2005 2242908.5 2006 1885034.625 2007 1883089.5 2008 2001153.25 2009 2037856.875 2010 2079659.625 2011 2112905.75 2012 2145232.25 2013 2174755.75 2014 2249150.75 2015 2254496 2016 2267753.5 2017 2250936.25 2018 2269251.75 2019 2278844.5 2020 2288979.75 2021 2327946 2022 2372110.5