Year	annual %
1971	11.857182806115588
1972	6.958653747473136
1973	3.251543957066488
1974	11.858881124134228
1975	4.3292062310920585
1976	0.5231939383822208
1977	-4.193924377469145
1978	9.321215051061799
1979	2.9280140194251913
1980	5.39532857189846
1981	-2.536947714083041
1982	-2.2275495472442657
1983	1.596603887110689
1984	2.5843897754317595
1985	-2.15753517247596
1986	-3.9140610420045903
1987	0.6104853874295344
1988	1.2332204045959259
1989	0.62484395052293
1990	5.261274572060444
1991	-7.387843455245502
1992	3.7457213436469203
1993	18.97549183504414
1994	26.28203172252242
1995	10.508667229749122
1996	-2.671616987856325
1997	-1.3525871262923204
1998	1.2991051775933755
1999	3.7890959635106896
2000	1.7411637418705936
2001	0.45493911213958427
2002	4.533175759278578
2003	2.9735105432378504
2004	0.6059785592023275
2005	0.38008060806787114
2006	10.36556133371171
2007	3.5897754619145843
2008	-0.3445325668130863
2009	0.6341750206571533
2010	1.2020485294816865
2011	4.323767132237251
2012	2.9140578048515238
2013	2.657830239662644
2014	3.4633757412947404
2015	3.4390487630235214
2016	4.32834924313741
2017	4.113590901162851
2018	1.0322693349190217
2019	3.5447429944834425
2020	16.555962616722468
2021	401.5911912636561
2022	14.1554019623172