Year	annual % growth
1991	34.03614402364187
1992	36.26159341893157
1993	15.84153761955443
1994	13.883148079979918
1995	8.68742873168091
1996	10.782445484891738
1997	-2.145462055985533
1998	9.283341084463842
1999	3.3512851803784827
2000	1.9852212926194426
2001	0.008450411599852714
2002	3.701600514255759
2003	-13.600573342914473
2004	23.643338180143303
2005	2.158345337602711
2006	-0.27862591724790775
2007	10.695217944993345
2008	5.3473971091844135
2009	17.333802074939527
2010	3.497610887693668
2011	-6.501686217536445
2012	5.5567640598208214
2013	4.830820150118555
2014	3.43565574898183
2015	8.021587314183606
2016	5.7174235438074845
2017	1.975489196200769
2018	-4.709084012592669
2019	-7.183372786618932
2020	-25.5942529857535
2021	-16.20262410629047