Year	annual %
1961	6.548173318497348
1962	3.5614710560047342
1963	0.8242146623027793
1964	8.385943053242698
1965	5.8910251735836425
1966	3.315876428206792
1967	6.2324586172294545
1968	4.588484240354603
1969	3.719008264766572
1970	3.960561146989278
1971	2.5386322629741755
1972	18.977748804716583
1973	42.944509090020176
1974	61.545960467460105
1975	6.695277653687626
1976	8.5989208742604
1977	12.54061842900343
1978	14.103810808938448
1979	19.797173638982457
1980	25.048943588223224
1981	29.48603588712436
1982	158.28274978461837
1983	265.1979603147467
1984	1443.397285865543
1985	12338.660215064574
1986	230.10522228428744
1987	14.584193823896214
1988	17.52333709626059
1989	13.18642127404108
1990	16.267941984637105
1991	17.689440220316683
1992	13.19920440951492
1993	6.5571581914609
1994	7.9522077250966845
1995	11.427281710448511
1996	11.580206869393422
1997	5.705043358223392
1998	7.0511267653363205
1999	2.4115658890652867
2000	5.195405208017519
2001	1.8700936577675122
2002	2.8207573973461564
2003	6.3299922925248495
2004	7.967709509242681
2005	5.940797630219279
2006	13.663679540354252
2007	7.373353861118389
2008	10.381181762674998
2009	-2.4198943282750207
2010	8.777508115545231
2011	14.602354240066532
2012	7.100275501150577
2013	5.995388368549243
2014	2.049497725604681
2015	-4.620602258456316
2016	-1.3548705805901733
2017	6.061399962184353
2018	3.0562657534529905
2019	-0.6930032717553445
2020	-1.8543866829455027
2021	3.9561196853251204
2022	5.124464431825089
2023	1.6995532148134345