Year	Number
1993	55000
1994	55000
1995	55000
1996	55000
1997	46000
1998	47100
1999	200000
2000	200000
2001	171900
2002	172200
2003	202000
2004	201000
2005	202000
2007	202000
2008	202000
2009	201750
2010	201750
2011	201750
2012	201750
2013	201750
2014	201750
2015	201750
2016	201750
2017	202000
2018	201750
2019	202000
2020	202000