Year	annual % growth
1987	5.9970584571411365
1988	5.732622558271274
1989	3.739211230548946
1990	5.479425180329798
1991	2.7219744037441274
1992	4.214046947528942
1993	5.258909580426447
1994	5.480883119278673
1995	4.656634920004166
1996	8.677994462938997
1997	4.140453084951631
1998	6.160688594592202
1999	3.231257539063236
2000	2.4029832795565085
2001	2.946030712106264
2002	3.8179934316389534
2003	6.3450703901091146
2004	6.727640726335494
2005	6.9037597797399854
2006	7.718108561109389
2007	6.411408577618147
2008	3.299955298729813
2009	7.970737627932394
2010	8.095591926450226
2011	4.37733917437491
2012	5.844713850306093
2013	6.1023434097294995
2014	6.2376198474255204
2015	7.438012063118407
2016	7.41704079376629
2017	6.0777495622169795
2018	5.71704656136896
2019	4.081720655747617
2020	-4.036634122657432
2021	6.539271629166876