Year	annual %
1967	3.227722772277228
1968	19.998369460962977
1969	11.589533395731607
1970	19.568798796647805
1971	-1.156173246270892
1972	28.866666666666667
1973	35.11263697502704
1974	33.89258240801977
1975	21.145947070139865
1976	32.72961373390558
1977	19.386600271616118
1978	25.539319908454424
1979	46.99574982201031
1980	34.813015528223794
1981	85.96025192289896
1982	11.489892337144564
1983	40.03266172014892
1984	110.73820469937077
1985	127.42729330372396
1986	174.4277661068535
1987	153.38883384771097
1988	117.6640356453691
1989	68.57146549495994
1990	60.24090658889947
1991	51.663445272013284
1992	66.48933022407293
1993	57.21897371389291
1994	35.80456014752979
1995	13.944622055798225
1996	19.346594342949498
1997	19.417573296024056
1998	22.936850468913768
1999	13.558340257181317
2000	18.14214269912318
2001	9.788802688604306
2002	24.526993625340992
2003	17.932825839129492
2004	8.773715456047276
2005	17.182852689076
2006	16.9209410464131
2007	21.966047824206473
2008	30.816210357208785
2009	17.490866909378642
2010	38.08359780568083
2011	13.098047859547302
2012	15.505657391187203
2013	9.903239561349036
2014	14.608610336662538
2015	11.735618349836841
2016	11.13600174354447
2017	12.700074065213872
2018	8.232153102566752
2019	15.876139956879861
2020	17.13232421807163
2021	5.03542937653592
2022	7.502709028596254
2023	10.548782576817208