Year	annual %
1971	0.12633992545949013
1972	0.3413011088718747
1973	0.20202491824166202
1974	0.10553420686341042
1975	0.02526694275385921
1976	-0.04152399260068762
1977	1.4301043614548519
1978	-0.48859480546471445
1979	-0.374147140864892
1980	-0.37414467812681096
1981	-0.37414740413099423
1982	-0.3741493980780035
1983	1.9320091107259572
1984	4.621996503400098
1985	5.436506247958235
1986	5.436506866719284
1987	5.4365056848110385
1988	5.4365063381677174
1989	5.436506378971302
1990	5.436506818344469
1991	4.905211950175769
1992	-6.399998569952487
1993	-12.30006932521556
1994	7.30003582211765
1995	10.899999746314876
1996	10.40004977632671
1997	2.299987567858679
1998	1.9999586810504724
1999	-5.399980619323614
2000	-2.6039020958001373
2001	6.5003906905630515
2002	5.016198992910887
2003	-3.223334338143033
2004	3.9390537201057185
2005	3.413989542137614
2006	-0.12372305506661974
2007	1.7540032949982844
2008	-5.4939360025863095
2009	-7.260612216847576
2010	-0.8958904724975127
2011	5.118279317160798
2012	1.2534536870993236
2013	-3.036298044183127
2014	5.2944551398963
2015	9.748413434382115
2016	0.882451194361991
2017	-3.5396096620795845
2018	0.6335004566810625
2019	0.9094702872978644
2020	-7.568021228711686
2021	-14.164051112521804
2022	-0.36228856544590826
2023	0.4484304932736336