Year	annual %
1990	7.844043391545459
1991	15.73332731906448
1992	49.005164182013054
1993	64.58894614318224
1994	31.93137753480389
1995	16.40216101618353
1996	26.731551333395426
1997	65.7623229588983
1998	113.28374384236453
1999	78.3631971101657
2000	46.04060591620352
2001	13.716376507745379
2002	37.598976994062355
2003	20.074800249334164
2004	21.636321591724244
2005	7.866184273063231
2006	26.721027850814878
2007	38.717904321811154
2008	18.310598379616604
2009	32.40648740266086
2010	39.12896387141101