Year	Number
1985	70300
1989	190000
1990	100000
1991	100000
1992	100000
1993	100000
1994	100000
1995	128600
1996	128700
1997	134050
1998	134050
1999	134000
2000	148900
2001	110200
2002	110200
2003	110500
2004	110000
2005	111000
2006	111000
2007	111000
2008	111000
2009	110500
2010	110500
2011	110500
2012	115500
2013	115500
2014	115500
2015	115500
2016	115500
2017	116000
2018	101500
2019	116000
2020	116000