Year	annual %
1966	-3.848577701177277
1967	5.400791442506986
1968	14.262554689016312
1969	15.716313385864396
1970	30.999289731945822
1971	6.999215676069895
1972	3.3984995462724896
1973	-11.199308627722473
1974	12.701115202272888
1975	6.4994718046191196
1976	2.299998213756794
1977	1.8998242817421556
1978	9.800007195871572
1979	-13.600005070034385
1980	-0.39999455233315473
1981	-6.999999370124669
1982	2.3999924884235355
1983	-1.9999975695876486
1984	1.7999992389876098
1985	4.500000496843427
1986	-1.0000034956538428
1987	5.70000274552396
1988	34.6000006526707
1989	10.999999473252032
1990	3.6000012717431957
1991	4.900028143842448
1992	0.5199948383922219
1993	0.5297946545371133
1994	2.590186905636685
1995	5.9400311023841965
1996	0.4498790835056212
1997	2.0071523304286103
1998	-3.2002755272662142
1999	0.9001725191734948
2000	2.1001088268880466
2018	3.9957072820387936
2019	-1.400000001984509
2020	-2.40000000064407
2021	-2.099999997628487
2022	3.499999996313761