Year	annual %
1971	-1.8287568783106138
1972	-2.620191887558292
1973	-0.3011798435617834
1974	-1.5160954794525452
1975	-4.669856509652007
1976	16.111724374071756
1977	-0.8630654015305055
1978	6.094147005765606
1979	8.71377718936887
1980	5.666226196131305
1981	2.0383808438825923
1982	-1.8934344301199104
1983	1.882750483666058
1984	-7.504188821975447
1985	0.49125890864245036
1986	1.6681930074911975
1987	-3.608111576373986
1988	1.266683951473226
1989	-2.5495355100730137
1990	-4.8199089281716425
1991	-4.79455327029072
1992	3.5764507460759773
1993	-11.185637901352251
1994	-41.46416517227405
1995	61.31436441215783
1996	-5.624144936840153
1997	-0.22030674526307337
1998	5.388579257882981
1999	3.4359439782943184
2000	6.785024708167597
2001	6.576188133068854
2002	11.38303775412301
2003	-0.5505535466786284
2004	4.715853383710638
2005	7.0352760339490175
2006	6.358564018786893
2007	5.25840863593676
2008	7.947439077158464
2009	3.5358525520874196
2010	4.387309563951931
2011	5.216923031904798
2012	5.476234173688738
2013	1.9072213272912677
2014	3.0239014512777516
2015	6.690517285933751
2016	2.537156099576208
2017	0.9125291044375814
2018	5.459860165830449
2019	7.135553973773597
2020	-4.651386394462165
2021	8.568359998060998
2022	5.653511731613619
2023	5.933767353972215