Year	annual %
1966	2.13447171852241
1967	4.2580982230929
1968	3.25732899024462
1969	-0.19412763892392
1970	1.62898127839351
1971	5.78947368498404
1972	5.08819538648815
1973	14.3318269849978
1974	24.3929983061798
1975	16.1597821153707
1976	22.495766575964
1977	17.7311208942373
1978	15.7855375941987
1979	2.20599195116767
1980	3.86952505941503
1981	11.3445968083975
1982	8.88571308471459
1983	2.97239915075073
1984	0.322399250235326
1985	-2.6359693029697
1986	-2.2960932141956
1987	-1.7450017537706
1988	0.303435966086578
1989	1.48589732182571
1990	0.929335437489093
1991	0.764419735927609
1992	-0.172413793103312
1993	2.53886010362695
1994	0.816910897759778
1995	2.70403475064704
1996	-0.452227382530348
1997	2.43155133955926
1998	-0.366533864541774
1999	-1.2875879718491
2000	-0.70485295309079
2001	-1.20757180156659
2002	-0.495540138751154
2003	1.59362549800787
2004	2.35294117647062
2005	2.58620689655173
2006	2.00746965452849
2007	3.25666666666703
2008	3.52600316363721
2009	2.79551283550412
2010	1.96188468334623
2011	-0.40004069748808
2012	2.75739669962979
2013	3.30001156888442
2014	2.64755321246189
2015	1.84862742374977
2016	2.78679347602044
2017	1.38671830576406
2018	2.08766938046978
2019	1.00582004702137
2020	-2.31770629331379
2021	-0.60631938514085
2022	3.62574104304482
2023	0.0746206782192256