Year	annual %
1961	4.58734545283552
1962	4.55414285191631
1963	7.91743563754524
1964	-4.70444383246927
1965	5.26615563405673
1966	7.31354376779461
1967	9.14889488414403
1968	10.7260474031977
1969	11.6578633481978
1970	11.2069976848014
1971	9.03927731936022
1972	11.113387845827
1973	6.34586465877179
1974	3.71913263494676
1975	6.55477491683737
1976	4.38544052238157
1977	4.69833832852018
1978	7.52658760654835
1979	8.02738681934689
1980	3.34219530517589
1981	5.06839195422673
1982	3.28345435889719
1983	9.70118365481767
1984	9.17549964001626
1985	0.702053524523706
1986	0.638896643747586
1987	6.25208079782702
1988	9.87879741156712
1989	7.79496254104326
1990	5.20486954524768
1991	3.14223439693401
1992	5.15270732238378
1993	6.34194887511951
1994	10.1085911201641
1995	4.61866920115415
1996	1.70172609907446
1997	7.58011108669288
1998	-5.91793757505799
1999	4.51730397490195
2000	5.30779899640362
2001	-3.75669252990585
2002	1.52771311260112
2003	5.35700953730812
2004	4.40636612660322
2005	5.27118572024938
2006	9.19425619880101
2007	4.65253791750216
2008	-4.29022316822071
2009	-4.41599644890687
2010	17.4044619562732
2011	1.58009962111242
2012	0.916051630067514
2013	2.22340390010376
2014	4.61396322356522
2015	-1.95671459141333
2016	1.38113183953239
2017	3.48101164191176
2018	2.81247053284572