Year	annual %
1966	2.826904853628804
1967	62.34339436802205
1968	77.51110225079259
1969	22.54870694494994
1970	10.991225148022195
1971	-1.7545898054163729
1972	6.840587651647084
1973	-16.670804719760497
1974	7.645792237657645
1975	19.293310305505656
1976	15.144581078254475
1977	-3.895828440202564
1978	-8.613153571188093
1979	-1.1483902642835346
1980	0.3962321189956839
1981	10.718015285225889
1982	5.4265917227457265
1983	10.24316921484585
1984	10.416365442756728
1985	7.269066785595157
1986	-4.3688500920655
1987	-9.102342609603568
1988	0.08423369392865254
1989	5.861684407237846
1990	-5.149351621914761
1991	0.999647719808209
1992	3.496770932424596
1993	1.6084753908954212
1994	0.8667639031068006
1995	3.112245608168223
1996	1.3073679932711144
1997	4.351113932370708
1998	1.10526505000594
1999	-1.0946902186214373
2000	5.112373655252725
2001	3.1452272322378008
2002	-2.2943637415011864
2003	-3.7870056901625304
2004	-0.23629280242781192
2005	0.6020593732701798
2006	3.5013123317646517
2007	2.646758920447297
2008	6.350043702003887
2009	4.282881719031707
2010	-4.793398139162093
2011	-7.531825012856814
2012	-1.258073750375729
2013	-2.5223857466116613
2014	-3.5733680281490763
2015	0.44463851723513415
2016	0.11916108235688228
2017	-2.8713238120475495
2018	-0.018356672740267754
2019	-1.1633166831766175
2020	-2.117168509545806
2021	3.61516461650578
2022	3.0387436441855016
2023	-0.1850433986509472