Year	annual %
1967	7.381795852106762
1968	6.692501496197465
1969	5.793927835876374
1970	2.9099591965105986
1971	2.5044555645900033
1972	-0.19036442184089708
1973	0.8498428242291283
1974	3.3297834714141885
1975	4.950629209312993
1976	7.83958020760511
1977	3.2064571880282102
1978	-0.9270325537480062
1979	1.7350943117650104
1980	0.6453760411303051
1981	-5.507056725646194
1982	5.866444918714976
1983	-1.197479987641131
1984	4.285164490104833
1985	2.206536443443113
1986	8.995178054823967
1987	-2.5750799014320336
1988	8.628964431648399
1989	1.2555660485657114
1990	2.3210906277716816
1991	5.137870892211964
1992	-3.364409491081318
1993	-2.9015749885578543
1994	9.524017598746283
1995	-7.265839543542597
1996	11.604732110223466
1997	-3.1020228121133187
1998	6.376991358786469
1999	0.35640778938228834
2000	1.0905717100485646
2001	6.433965731582077
2002	2.7128259578775413
2003	5.06066092672927
2004	3.6484298665834416
2005	2.3584266573388106
2006	6.240836715346475
2007	2.2815040166689187
2008	4.457134730242672
2009	1.1727774569367568
2010	2.13402551653013
2011	3.7897962224647586
2012	1.319707260641806
2013	3.36843651322431
2014	0.6774507122911473
2015	3.4577043730874095
2016	-0.5668764954787235
2017	3.6414236105932076
2018	1.9402756540190182
2019	1.7902412232101454
2020	-7.643423758055306
2021	6.411809438204912
2022	0.24656665719295745