Year	Age
1985	2714
1990	7900
1991	9000
1992	10000
1993	11000
1994	11000
1995	12000
1996	12000
1997	12000
1998	13000
1999	13000
2000	13000
2001	14000
2002	14000
2003	15000
2004	16000
2005	16000
2006	17000
2007	18000
2008	19000
2009	19000
2010	20000
2011	20000