Year	annual %
1981	4.900161859985303
1982	2.3345655917153465
1983	3.4303059138709244
1984	3.396443621922458
1985	2.683440740706942
1986	4.207602003262494
1987	6.054513838743446
1988	10.944692064305642
1989	-3.2898820682497103
1990	-9.11737709565385
1991	-8.445355196371551
1992	-7.272387966447141
1993	-1.480214854218147
1994	1.8180113341543063
1995	2.862019071779031
1996	5.205392832215907
1997	-14.115380764208552
1998	3.7891213638772285
1999	-8.396092569867932
2000	4.5872268586940805
2001	3.823703965084917
2002	5.871929609728198
2003	5.237154252513406
2004	6.510425672373003
2005	7.056349600518203
2006	6.802589602229688
2007	6.654387625014664
2008	6.129558762327704
2009	-3.347142262983027
2010	1.5553595130147357
2011	2.0901756964412073
2012	0.7488148029573267
2013	-0.5427513130856738
2014	0.949448520821818
2015	3.397553875906482
2016	3.0266283922412356
2017	2.7459272587673382
2018	2.69490655338835
2019	4.035188946624984
2020	-3.966156136273341
2021	7.6617480742932
2022	3.9264322212456904
2023	1.8463895601987872