Year Number 1970 436958.4375 1971 457013.5 1972 476635.78125 1973 489188.1875 1974 526975.25 1975 557897.0625 1976 603751.375 1977 649012.875 1978 652261.6875 1979 666933.25 1980 724964.25 1981 749164.875 1982 805771.25 1983 947029.1875 1984 996488.5625 1985 1048774.625 1986 1092560.25 1987 1086230 1988 1124660.25 1989 1292912 1990 1215599.125 1991 1272722.125 1992 1286879.5 1993 1334154.625 1994 1359354 1995 1375677.25 1996 1389233.375 1997 1452341.5 1998 1462865.25 1999 1489853.125 2000 1520130.875 2001 1558039.5 2002 1571747.25 2003 1557928.875 2004 1569617.375 2005 1600759.75 2006 1622912.125 2007 1624644.375 2008 1632668.625 2009 1631648.25 2010 1629323.75 2011 1645414.875 2012 1698392.25 2013 1775545.375 2014 1834716.5 2015 1895480.625 2016 1940961.625 2017 1948879.625 2018 2008279.875 2019 2078357.875 2020 2027846.25 2021 2043794.875 2022 1983231.125