Year	Number
1960	0
1965	0
1970	0
1975	0
1976	0
1977	0
1978	0
1979	0
1980	0
1981	0
1982	0
1983	0
1984	0
1985	0
1986	9055
1987	39234
1988	98332
1989	178400
1990	283200
1991	375000
1992	436700
1993	572000
1994	883000
1995	1302496
1996	2462700
1997	5817300
1998	11210100
1999	21433500
2000	29052360
2001	36997400
2002	38585300
2003	41702000
2004	44544000
2005	48088000
2006	51662000
2007	55358100
2008	57972000
2009	57918000
2010	57785000
2011	59816000
2012	62260000
2013	63324000
2014	65425000
2015	66681000
2016	67571000
2017	69018000
2018	70422000
2019	72040000
2020	72751000
2021	75304000
2022	76807000