Year	Age
1990	7500
1991	8500
1992	9500
1993	11000
1994	12000
1995	13000
1996	15000
1997	16000
1998	17000
1999	18000
2000	19000
2001	20000
2002	21000
2003	22000
2004	23000
2005	23000
2006	24000
2007	24000
2008	24000
2009	24000
2010	24000
2011	23000