Year	annual %
1971	36.612377854072435
1972	39.07963758791513
1973	76.62015503720838
1974	14.498041267780053
1975	6.227401388802264
1976	16.526856506014425
1977	21.43933017019937
1978	-1.5896033199162645
1979	20.923573077015533
1980	23.874774910497848
1981	4.65917667406508
1982	-6.719316185707754
1983	-4.745820699965847
1984	4.016951279594053
1985	-3.594476517368321
1986	-14.958136564532694
1987	3.3819817090086275
1988	-2.6189077038325905
1989	12.337891282259903
1990	18.327985533640614
1991	0.8600819476266963
1992	3.3449448584943866
1993	1.261190945666371
1994	6.896148553437769
1995	6.687886459726371
1996	5.798404069199648
1997	8.190398649168799
1998	0.2919943420941422
1999	2.902213639632862
2000	10.852704215377983
2001	1.3990850370667545
2002	2.4334568108961747
2003	8.800540813553283
2004	9.566436637670563
2005	4.85514119553352
2006	9.837319769239585
2007	3.184390173246072
2008	3.1918362733181596
2009	-5.242921903850274
2010	1.6028500467135416
2011	6.216121816643707
2012	1.8244807850986007
2013	5.055559658079687
2014	4.165691840649217
2015	6.786772876566175
2016	5.561490759799327
2017	0.7350687139412031
2018	1.3139138815357825
2019	1.1083481345329602
2020	-4.957052433033155
2021	4.354755296599194
2022	7.8504181227878576
2023	3.4038572060948695