Year	annual % growth
1991	4.99999997872716
1992	-32.0000000056857
1993	-4.99999999216128
1994	-21.9999999504923
1995	3.99999989844567
1996	7.0000000569616
1997	16.9999999930287
1998	4.60000000000002
1999	1.10000000517844
2000	0.899999983711638
2001	3.99999998172483
2002	3.60000003026337
2003	4.49999999293264
2004	4.89783196301616
2005	7.00000001203487
2006	9.10000000992193
2007	22.9000000041606
2008	28.2999999782799
2009	24.8000000024285
2010	9.20000000621182
2011	7.90000001171967
2012	11.5999999896466
2013	9.80000000734213
2014	65.4726958843467
2015	9.39999999849634
2016	4.10000000000719
2017	19.4000000029432
2018	18.1000000008985