Year	annual %
1968	1.2348394588378682
1969	-1.4838728439218585
1970	3.5327614143151322
1971	0.6384894144201922
1972	4.298278717154517
1973	-2.0630784507167874
1974	5.860046187698572
1975	4.6704355098062535
1976	9.249572281914652
1977	-2.6053378943636716
1978	3.426128744082874
1979	5.350037999773292
1980	-7.507056197778965
1981	2.8239407593036816
1982	-7.743280497687252
1983	1.1729698412599134
1984	-0.8776967715421762
1985	-5.198829418093396
1986	-7.684256484835913
1987	-9.075728591407398
1988	7.28545637324882
1989	-4.551829948929907
1990	-1.663523430922666
1991	17.557432006975347
1992	-10.072591874963223
1993	5.63661514757861
1994	-3.02956434430331
1995	0.49775513068584587
1996	4.436788468384094
1997	-4.425547659080735
1998	-1.2216159953921562
1999	6.651724059219674
2000	-4.5176735627882465
2001	4.015349561724207
2002	-5.148012936314444
2003	4.412985358523031
2004	1.1364513919265704
2005	3.2958635782578654
2006	1.1681034526788636
2007	2.419981362972635
2008	4.53375974798314
2009	2.3166671840729265
2010	7.076295794960757
2011	-1.053030816484565
2012	-1.7283512266193668
2013	4.706989255811564
2014	5.18108030242135
2015	2.995312427748871
2016	2.533543851782568
2017	0.14006226865919302
2018	-0.2187303004734531
2019	0.6047297116700747
2020	-1.2525181071949305
2021	-0.20188009113138605
2022	0.8302900054701041
2023	1.553170005565292