Year	annual %
1961	5.374303544478721
1962	3.4827290759552767
1963	-2.3158716622814524
1964	0.4496441854380464
1965	-0.4569000519440465
1966	3.810395918071748
1967	1.4656031090122923
1968	7.001720507279714
1969	6.772837835625296
1970	7.685540345465853
1971	8.641356194520043
1972	9.254398626764697
1973	11.25050802567749
1974	5.606682803031177
1975	2.7158588466779605
1976	7.695060335914832
1977	2.49066354582763
1978	2.5185062579298005
1979	4.27224216380786
1980	6.662997478672779
1981	-6.452870866177406
1982	-1.4509340753626816
1983	-5.088346394113714
1984	3.108082047953502
1985	5.5678365114048205
1986	5.288389971724584
1987	1.4785966672781825
1988	-1.9780448679361626
1989	1.243611572439022
1990	-6.06555566873385
1991	-0.7006962759058126
1992	-2.179979805982441
1993	3.2425632721546265
1994	4.182955814957296
1995	2.608090005801131
1996	0.6565021628534708
1997	1.8553430248840215
1998	-1.1244424257402414
1999	-0.9488459225517261
2000	2.9709107810716517
2001	0.05964894366840667
2002	1.7602427785657682
2003	-0.051285666497420834
2004	4.561781957488392
2005	2.055571501464428
2006	2.847962007653095
2007	4.980829920005036
2008	4.061722166215631
2009	-1.0732383326647863
2010	6.522816179229267
2011	3.013396272619744
2012	1.0076540328270482
2013	2.114256451943035
2014	-0.35451480226443266
2015	-4.358317179393367
2016	-4.0574230024056845
2017	0.5232965885742118
2018	0.9789384926973952
2019	0.44828040714865836
2020	-3.918004171540389
2021	4.210300253531571
2022	2.5443328537780587
2023	2.381177724288989