Year	annual %
1961	8.14473815531294
1962	7.48981486103382
1963	10.6798062903632
1964	-2.23047563335676
1965	7.85551100450783
1966	10.0150082486734
1967	11.5864632562465
1968	12.6521072892566
1969	13.350490004321
1970	12.9496671461955
1971	11.0572724257263
1972	13.190617634227
1973	8.35183107075197
1974	5.45960873205851
1975	8.12217854822686
1976	5.80179030760084
1977	6.15926660938733
1978	8.83523699770876
1979	9.3997605727028
1980	4.66220920744821
1981	10.2431499207247
1982	7.91707723691957
1983	11.1352139610972
1984	11.2587862797396
1985	0.839752075251326
1986	0.543847303086366
1987	7.86200969458675
1988	12.7029566368616
1989	11.0064563630425
1990	9.37698835516778
1991	6.11928385112397
1992	8.35969613595896
1993	9.06651246300061
1994	13.6169769562537
1995	7.84555446764217
1996	5.92035672482243
1997	11.253369852025
1998	-2.66685986229754
1999	5.35589873618665
2000	7.14766215676801
2001	-1.12533910932972
2002	2.45853650800593
2003	3.81488335022293
2004	5.7216628626671
2005	7.77490667363207
2006	12.665398921561
2007	9.10445528505646
2008	0.94094322920904
2009	-1.48931905069635
2010	19.5032110720374
2011	3.72017735912887
2012	3.4225375009995
2013	3.892190692914
2014	5.98116992582405
2015	-0.786624549410902
2016	2.7050572130902
2017	3.57273175446187
2018	3.29652103963673