Year	annual %
1981	5.769420503019546
1982	2.2016759463672173
1983	5.004387195826681
1984	1.0113816704000271
1985	12.905178868482096
1986	-2.33055635744239
1987	4.436737362443608
1988	2.655262182588203
1989	-1.2291780794983396
1990	-1.7585640849644335
1991	-1.022238877102879
1992	34.745320029065226
1993	11.033213037527673
1994	16.668835541841645
1995	17.48626373239381
1996	66.57999722158965
1997	149.97296348796513
1998	23.774482329960662
1999	25.664015441041826
2000	18.21377995696743
2001	63.37987542506022
2002	19.4628340359251
2003	13.95525031638249
2004	37.9987268556423
2005	16.748700605354088
2006	7.704917606587671
2007	15.282113919485724
2008	17.799109133381137
2009	1.3433562880609458
2010	-8.924175888518064
2011	6.523923629898732
2012	8.31287184445641
2013	-4.133198501315832
2014	0.4150663015968661
2015	-9.11004114881537
2016	-8.816417232197566
2017	-5.667508504866859
2018	-6.236544067345747
2019	-5.481825378934445
2020	-4.791080833832936
2021	0.8602699563820693
2022	3.7160105935475087
2023	-5.691583464310341