Year	Age
1990	23000
1991	23000
1992	23000
1993	23000
1994	23000
1995	24000
1996	24000
1997	25000
1998	25000
1999	26000
2000	26000
2001	26000
2002	25000
2003	25000
2004	24000
2005	22000
2006	21000
2007	20000
2008	19000
2009	18000
2010	17000
2011	17000