Year	0-14
1990	500
1991	600
1992	780
1993	980
1994	1200
1995	1400
1996	1600
1997	1800
1998	2100
1999	2200
2000	2400
2001	2600
2002	2700
2003	2900
2004	2900
2005	3000
2006	3000
2007	3000
2008	2900
2009	2800
2010	2700
2011	2600
2012	2500
2013	2400
2014	2200
2015	2100
2016	2000
2017	1900
2018	1800