Year	annual %
1971	2.3015754181188157
1972	1.066915160036757
1973	33.93000711097227
1974	15.327278094933504
1975	0.07428817048837288
1976	0.3563226666800148
1977	2.4262141649702613
1978	5.6402093133972215
1979	2.1192241662875517
1980	-7.196411608231685
1981	9.723725217710452
1982	-2.621064236130266
1983	1.9299966599519678
1984	-3.952498486661298
1985	16.55067628058893
1986	7.979347319103056
1987	1.1997600479904094
1988	2.5489033787788884
1989	3.5260115606936324
1990	3.740926856504757
1991	7.427341227125936
1992	4.008016032064134
1993	8.14065510597301
1994	-0.5345211581291807
1995	7.014464845499319
1996	-3.182371518973838
1997	-6.060937436516298
1998	2.8505158599975005
1999	1.3744383896125498
2000	4.833903786171106
2001	2.1676024405049077
2002	0.5469976724993444
2003	1.5721150674310849
2004	-3.080153047474738
2005	2.0418671639554447
2006	-0.08105529341648321
2007	-1.8361852940239771
2008	-2.40849258666222
2009	1.0930992410524567
2010	2.2593899558593193
2011	3.188574754739278
2012	-1.86681975475544
2013	-3.6797677907348287
2014	-2.3057757452932464
2015	4.621884004049392
2016	0.4841018023870447
2017	0.8230452674897037
2018	0
2019	4.081632653061234
2020	-1.9607843137254974
2021	2.799999999999997
2022	-0.7782101167315147
2023	0.7843137254901933