Year	annual %
1971	1.09999999900012
1972	-0.0989119673600758
1973	2.47524752475231
1974	7.05314009565229
1975	2.2563176895509
1976	4.41306266552893
1977	4.90278951821559
1978	8.10126582278465
1979	7.02576112412187
1980	9.68271334792129
1981	19.1271820448877
1982	103.55871886121
1983	25.534759358289
1984	15.4009994265582
1985	11.5212607368495
1986	16.5499681731383
1987	26.3790278536323
1988	58.7208297320654
1989	244.550932984827
1990	567.878800666191
1991	76.7694992087347
1992	46.0985621037431
1993	36.9641666120718
1994	32.9912766093522
1995	27.951388563304
1996	19.7949669196707
1997	14.9131586149599
1998	11.5978554257235
1999	7.15407291179862
2000	9.90017538843064
2001	5.40833545566148
2002	1.90528215048055
2003	0.682701375787681
2004	3.38264681884691
2005	2.18379872390258
2006	1.28469394366408
2007	2.45874312385402
2008	4.16497193524764
2009	3.79539242483406
2010	2.58069370250543
2011	4.2394014962594
2012	3.56037151702783
2013	0.991982606332428
2014	0.0538213132399802
2015	-0.87412587412577
2016	-0.664767331433961
2017	2.0759355367385
2018	1.81295156542679
2019	2.227478809383
2020	3.37446972618589
2021	5.05502704719272
2022	14.4294507575758
2023	11.5289127961105