Year	annual %
1971	2.1183157474149823
1972	7.273845401878873
1973	4.101036408928422
1974	4.468527386859279
1975	-2.2710034037006324
1976	2.5968363053140138
1977	2.742801430036508
1978	6.239136222328014
1979	5.261194530041394
1980	-5.958996884585687
1981	10.806552332318134
1982	6.1740086237718685
1983	6.758567464973652
1984	-8.065534179976325
1985	-0.4862255456493898
1986	13.32204642664378
1987	7.158147068960048
1988	2.9600631785815352
1989	-1.141930105739931
1990	2.7394906939881594
1991	0.9863338437585725
1992	3.9263682599970195
1993	4.393269687919329
1994	6.75864760439093
1995	5.584879653154374
1996	3.167832646412407
1997	1.456359407195464
1998	3.4022990663756616
1999	1.647359795843613
2000	5.475879508976547
2001	1.4758815927681042
2002	-0.4706421820038713
2003	-1.5448716067143238
2004	3.3803386808554308
2005	1.6218661964510375
2006	3.328540565767895
2007	5.596524758079255
2008	0.3641782005965979
2009	-1.3306043666803191
2010	2.929759056217847
2011	2.3745872515487747
2012	0.788303469108314
2013	1.3635736467314246
2014	1.9776166988471289
2015	1.6473195183527594
2016	4.068682331072651
2017	1.5631874260329397
2018	1.5891345373612893
2019	2.0410815465117196
2020	-9.020539365197678
2021	9.604810785422899
2022	5.321230168735298
2023	-2.7597083737869212