Year	annual %
1961	0.21455606180507358
1962	-0.053476828115032904
1963	0.6581354608099745
1964	1.6795239220556857
1965	1.776159914205478
1966	1.8295544727041073
1967	1.8103435434200603
1968	1.7046781684370738
1969	1.420601039457769
1970	1.2090331216611634
1971	1.2711410785221928
1972	1.3405910405416384
1973	1.427333303215836
1974	1.4921917812578276
1975	1.5082768042637233
1976	1.4568001420345125
1977	1.364154744836781
1978	1.257988143927804
1979	1.1872790583575001
1980	1.1701520646690238
1981	1.1663379179513726
1982	1.1596167481375852
1983	1.163300147727107
1984	1.1904003425120406
1985	1.2377046317021843
1986	1.26319456600673
1987	1.2535378934067727
1988	1.2076616859913891
1989	1.5981117120840356
1990	2.0013675049117583
1991	1.8790732413224562
1992	1.7463306016292253
1993	1.607484197387959
1994	1.4692348276881282
1995	1.351145517292907
1996	1.243296962001237
1997	1.1503652935295756
1998	1.0806858961900545
1999	1.071789910393743
2000	-0.2608284678953256
2001	-1.6949395616045824
2002	-1.7375591668945791
2003	-1.8029806419138938
2004	-1.8740937623261276
2005	-1.9277011718861727
2006	-1.9593246733743654
2007	-1.9215580518356712
2008	-1.8338188097927373
2009	-1.706931022766415
2010	-1.663986874002234
2011	0.2924386747221016
2012	1.539604254515532
2013	1.663554809527417
2014	1.79963925868105
2015	1.9001972007444776
2016	1.9512162852822115
2017	1.9620712616112854
2018	1.9117943821983052
2019	1.8290297162364682
2020	1.533868049177984
2021	1.2001763274014694
2022	1.0340511067096174
2023	0.9125070447156547