Year	annual %
1964	1.89557417280998
1965	1.78556598298228
1966	2.50489556095838
1967	1.87853219781649
1968	6.97710758672967
1969	2.31522056676475
1970	1.5418659432567
1971	0.316344463692482
1972	5.39593552933407
1973	13.4507978726776
1974	29.115630311092
1975	14.738323271755
1976	12.9557291671836
1977	9.17249897074798
1978	8.54513915082286
1979	14.4663702058303
1980	41.9995143865698
1981	14.4615910742107
1982	11.4156931283651
1983	5.58949801843939
1984	7.38916256169472
1985	6.69870394658493
1986	1.63265306122481
1987	0.5187416331999
1988	9.1593141335106
1989	12.670042091136
1990	13.4880887926371
1991	7.0010137754188
1992	4.64351929883709
1993	10.5178384472896
1994	7.32347154412295
1995	6.02933188484529
1996	6.55097336065573
1997	6.833343349961
1998	6.81079323797194
1999	6.90914624866776
2000	4.1992882562281
2001	5.38934426229505
2002	6.41933372221151
2003	3.92105357558194
2004	4.71037060105879
2005	4.93717004981791
2006	8.91350105650147
2007	8.82729272393297
2008	9.73228317146881
2009	2.51609128145115
2010	2.9323630136986
2011	6.5224925486934
2012	3.85216033315983
2013	3.54329573934839
2014	3.21769191994676
2015	1.2865497076024
2016	0.977675134718965
2017	3.66699702675925
2018	3.2160538314457
2019	0.405655190309553
2020	2.5808007718283
2021	4.02852888157383
2022	10.7737512242898
2023	7.05298238454736