Year	annual %
1971	4.0574329597882866
1972	7.574399633993735
1973	6.63644463665689
1974	1.8739715461285584
1975	0.001021239531695528
1976	2.0934291884543654
1977	1.7585062440434314
1978	1.8411885540476618
1979	-0.16776432976297428
1980	-1.3434683985792901
1981	-2.8660375642376295
1982	0.6065726268472957
1983	0.6179989037855478
1984	2.2792932500788794
1985	3.291973252584185
1986	5.1380290606583685
1987	5.575035759062089
1988	5.112092789261482
1989	5.314682936822933
1990	4.440793753926457
1991	3.019469452703021
1992	0.7628554692517611
1993	-1.4064465062934062
1994	0.2962704135277079
1995	3.9529414119651136
1996	2.05620478419317
1997	3.5425154719048493
1998	4.69553990771206
1999	4.4229246835880645
2000	3.7979458754208792
2001	3.1152869511105337
2002	2.4592757755479226
2003	1.9317342941240838
2004	1.2237243286759423
2005	1.7036436225503593
2006	2.0012859514390726
2007	1.3913851752871693
2008	-1.5180188275094224
2009	-2.659268925956013
2010	-0.5863399636675695
2011	-2.451644072830746
2012	-2.3333299762715
2013	-0.5641226881366777
2014	1.691969184461044
2015	4.43822156033626
2016	3.303541020368897
2017	2.403640924991606
2018	1.743390854956985
2019	1.208568083367183
2020	-10.98394681122997
2021	6.647234582611162
2022	2.1108220539878317