Year	annual %
1981	-2.1003061669614027
1982	0
1983	0.012763558386637897
1984	0.0011881098994876993
1985	19.035205740794396
1986	-9.013061919943581
1987	9.823311349966303
1988	2.21377444948736
1989	16.27966268538374
1990	14.007439827259248
1991	106.30998226847836
1992	476.51575086326034
1993	917.7834684117635
1994	2175.9789550875926
1995	1825.4951490073122
1996	4800.531644157435
1997	95.45302217911293
1998	39.35934832526931
1999	557.5011130912153
2000	418.0189915340991
2001	106.35212550145093
2002	196.98409939993138
2003	93.92656690673081
2004	33.443594790025514
2005	42.37424926172838
2006	17.115665144854162
2007	4.308432212071821
2008	19.365773555832575
2009	-16.762140290159223
2010	32.27046912244123
2011	31.771460155898637
2012	7.255749909438251
2013	2.8397241263776465
2014	3.5608847720580457
2015	-3.5183853459847825
2016	21.774312558284947
2017	22.61443652413493
2018	28.16709325548908
2019	19.187003827178458
2020	10.763105282479884
2021	38.823721837491775
2022	13.709847520784152
2023	17.64775693195982