Year	Number
1970	16844000
1971	17830100
1972	20090400
1973	22015500
1974	25843700
1975	29706400
1976	33027800
1977	36254400
1978	40006700
1979	46621500
1980	50802300
1981	50925000
1982	52614200
1983	51979200
1984	52942400
1985	54531200
1986	58676800
1987	60008400
1988	59505900
1989	64470900
1990	62937900
1991	62216000
1992	63335900
1993	66721700
1994	72301500
1995	71128400
1996	75346000
1997	83418400
1998	88239900
1999	90651300
2000	93639750
2001	99068745
2002	95813090
2003	92587521
2004	99215943
2005	105704481
2006	108594923
2007	118159408
2008	131727500
2009	138693494
2010	175872865.02694327
2011	195644076.78756058
2012	214936093.9568417
2013	232318775.07170224
2014	246692569.63856417
2015	262023503
2016	264419476
2017	273553611.35
2018	290659005.9239138
2019	302747680.5510806
2020	119711410.65999998
2021	186616854.56199998