Year	sprdRate	3yearAverRate
1995	23.85	23.85
1996	-4.72	9.56
1997	31.32	16.81
1998	0.92	9.17
1999	46.45	26.23
2000	6.77	18.04
2001	14.96	22.72
2002	33.42	18.38
2003	35.97	28.11
2004	-6.56	20.94
2005	-12.03	5.79
2006	8.06	-3.51
2007	21.04	5.69
2008	46.96	25.35
2009	-19.81	16.06
2010	10.99	12.71
2011	9.06	0.08
2012	0.83	6.96