Year	Age
1985	153
1990	2500
1991	3200
1992	4200
1993	6000
1994	8800
1995	12000
1996	16000
1997	18000
1998	20000
1999	21000
2000	22000
2001	23000
2002	24000
2003	24000
2004	24000
2005	24000
2006	24000
2007	24000
2008	24000
2009	23000
2010	23000
2011	23000