Year	annual %
1967	3.7950925489770526
1968	7.739066346397848
1969	4.462410975902316
1970	18.911052427123764
1971	6.083447333234588
1972	12.24686285024903
1973	10.815204838966025
1974	7.445484097545744
1975	-4.720775189656081
1976	11.416932563983352
1977	3.4931183713812715
1978	-2.464252874623753
1979	7.41294943168549
1980	2.634018798407837
1981	-2.7109574257028157
1982	-10.5884062365282
1983	-8.286233874150028
1984	-1.8182526398803844
1985	-4.218412137152157
1986	0.330247529725483
1987	-3.6274835667486514
1988	2.322763673836363
1989	0.9162882987481424
1990	6.170913561871316
1991	-0.7432908377464713
1992	3.7007188463829266
1993	-0.10600285836048329
1994	0.4401465847722079
1995	0.22443465300325727
1996	2.1350500096635443
1997	2.515322669011283
1998	2.4718379189689017
1999	-0.4182815133144828
2000	4.2157960838706146
2001	-0.5545787321229056
2002	-1.5164983886011356
2003	2.6288951259704447
2004	6.552389701927993
2005	3.061790555119032
2006	3.535304225326726
2007	1.771866161561391
2008	2.769946747724788
2009	-2.166110863455387
2010	2.320163351710903
2011	1.3689091401418665
2012	2.786278401896652
2013	0.21523415346189267
2014	0.12172962039149127
2015	1.2056016288998848
2016	1.4687629721628355
2017	-0.5461563896334951
2018	0.5161436489799769
2019	-0.38366226113151924
2020	-7.035206400066045
2021	3.4375095396055144
2022	3.9344098764644
2023	-0.9015031977389896