Year	Number
1970	47767900
1971	52648900
1972	58293200
1973	62913900
1974	64977900
1975	67971100
1976	73633200
1977	79541900
1978	86861500
1979	93006700
1980	93554600
1981	96063300
1982	98607500
1983	101810300
1984	106237300
1985	112309600
1986	114465700
1987	125896200
1988	136470700
1989	147372400
1990	157891000
1991	150528000
1992	164292000
1993	169958600
1994	182625300
1995	193536844.1
1996	213329200
1997	235129900
1998	245065100
1999	266190600
2000	288449342
2001	286388891
2002	287161373
2003	317807082
2004	347767674
2005	359471494
2006	390742949
2007	425646377
2008	427781328
2009	419908189
2010	483874507.22771156
2011	515081475.25448227
2012	514301800.9848345
2013	522944433.0824476
2014	548633990.7767321
2015	588104162
2016	620961607
2017	657059035
2018	691558405.2687137
2019	752764693.96
2020	224581685.7655
2021	300510412.94299996