Year	annual % growth
1981	-21.99328621530387
1982	-4.887366584086308
1983	-2.8884686472960794
1984	-1.4558304037184087
1985	-11.903379961294775
1986	7.224186647600476
1987	17.162165171583595
1988	10.964791208825744
1989	7.263615539355456
1990	40.301098300700886
1991	5.176390335361944
1992	3.5881919940622
1993	3.3070451810366563
1994	-0.21756269743235634
1995	-0.14729398079487055
1996	-2.9115628233056867
1997	-8.106280923216787
1998	0.2736340179960024
1999	2.6558966995677338
2000	-2.449238486329847
2001	0.4476154178904892
2002	1.072998673853732
2003	-1.8597390491945873
2004	-2.10385121260461
2005	-0.8742389814749174
2006	-1.2645536374905646
2007	-2.2156451421438135
2008	-7.658502645484546
2009	2.364536056179219
2010	-6.004774609802951
2011	1.6205278600297675
2012	3.2180091653116563
2013	3.6244729622451075
2014	2.8484436869347576
2015	8.099249401413331
2016	-1.2769054226676246
2017	-3.1053616962122135
2018	-3.3818423091549192
2019	2.8823777078745394
2020	-12.474366356789574
2021	11.574301523956848