Year	annual %
1988	1.86591087831611
1989	0.948041642562728
1990	9.84063463786056
1991	0.663345803753785
1992	5.15838024225846
1993	7.74939451842809
1994	-5.54679875825032
1995	8.53694420105218
1996	7.6048033035913
1997	7.61750416820119
1998	2.7593801929694
1999	-3.68980145675765
2000	6.57777227395052
2001	-6.95725517938651
2002	7.07646238233642
2003	5.73770666018648
2004	10.0810566964914
2005	9.35969530795222
2006	7.11087572140757
2007	5.18758716569607
2008	0.788064969405752
2009	-4.89608251473037
2010	8.86851608273747
2011	11.1069192030314
2012	4.90996895628801
2013	8.32271285660457
2014	5.19707481029941
2015	5.81869715141117
2016	3.23876612892026
2017	7.21453151884661
2018	2.33897902535512