Year	annual %
1991	1.44482472940601
1992	3.91499275226701
1993	-0.0774131985168793
1994	0.792511887117016
1995	3.44608190847242
1996	4.63137517269956
1997	3.39832397259414
1998	3.49922668069051
1999	2.88418265656539
2000	2.10760879228906
2001	5.3067963556295
2002	7.44164873358348
2003	5.92922333683794
2004	6.45127862683688
2005	6.14572328965379
2006	8.3074432036826
2007	6.04222294848043
2008	5.67354687536002
2009	4.85260340683466
2010	5.62244066484277
2011	5.20579589581934
2012	5.02465848531699
2013	4.5676976617121
2014	7.52438418985473
2015	5.03986555261251
2016	3.24323322126222
2017	3.51376530145498