Year	Number
1970	1208100
1971	1463600
1972	1640000
1973	2213400
1974	1923800
1975	2046700
1976	2075200
1977	2466500
1978	3099800
1979	3725900
1980	3566600
1981	4186700
1982	4201500
1983	4861500
1984	5353300
1985	6202500
1986	7211400
1987	8330900
1988	9826000
1989	13160800
1990	15684500
1991	16908000
1992	19766900
1993	21425900
1994	24932300
1995	29345200
1996	33002700
1997	35505800
1998	27109000
1999	30870200
2000	34331368
2001	33710340
2002	34831814
2003	33372577
2004	34511494
2005	33888328
2006	34842655
2007	36655313
2008	36077655
2009	34168590
2010	36987982
2011	39911749.5898122
2012	39969577.0157166
2013	54530105
2014	58289180
2015	66093149
2016	76859538
2017	82818983
2018	88157579
2019	92434079
2020	30033310
2021	34020088