Year	annual %
1971	13.060851351413078
1972	6.177273562109548
1973	6.806008990516972
1974	5.706253994352295
1975	0.6462401411537257
1976	5.959208507524522
1977	8.822315281092429
1978	6.016717204000173
1979	4.86059745965801
1980	8.676006267322862
1981	0.6652795628876191
1982	-4.419660839753675
1983	3.4572166679382548
1984	-5.179615486426897
1985	3.6563879784166033
1986	7.097322746202806
1987	5.515872098963399
1988	5.603610711164933
1989	6.6595450241052845
1990	-11.719532984158505
1991	-0.11346459774756568
1992	-5.111700032319703
1993	-5.027932629425152
1994	5.924369801492091
1995	3.728677489111206
1996	1.5296373613267917
1997	1.4689263809697195
1998	7.757981744825514
1999	1.3778844452400563
2000	7.101596881816192
2001	1.2690350790278728
2002	-0.9711773106655528
2003	4.430045721182111
2004	6.90658283676629
2005	4.987491770901926
2006	5.55569490080012
2007	2.3524379811805005
2008	6.166132701861898
2009	0.865952328886948
2010	1.7358250588966513
2011	-0.4965193919590831
2012	1.3941933595562546
2013	-1.2982806933551103
2014	4.7421356730151984
2015	-2.5293180239447537
2016	4.681954109723023
2017	0.05272818288003123
2018	0.62306542854094
2019	2.8321775679868324
2020	0.1876087937592814
2021	1.2902104877059912