Year	annual %
1961	0.388758522045554
1962	1.54908433286584
1963	2.42880181907325
1964	2.38834142305473
1965	2.38282852669328
1966	2.34371196445395
1967	2.30201587652003
1968	2.22288403314608
1969	2.13250760546014
1970	1.97936335198728
1971	1.42875518945652
1972	0.933967665672665
1973	0.85640362345114
1974	0.798746498634398
1975	0.695941968029767
1976	0.673379225676679
1977	0.619481971881274
1978	0.520926171842624
1979	0.465825755218438
1980	0.404520010398403
1981	0.295380125455353
1982	0.152560620415622
1983	-0.0277209884307523
1984	-0.232465451737191
1985	-0.39678448214817
1986	-0.587619739123692
1987	-0.824267585549865
1988	-0.966740540213664
1989	-1.12054038421608
1990	-1.34898873232267
1991	-1.21168962446375
1992	-0.159457137971897
1993	0.639996265465746
1994	0.602943003081102
1995	0.475372965264868
1996	0.287780465626925
1997	0.265189511511502
1998	0.260869713158702
1999	0.213262085851877
2000	0.16595717785441
2001	-0.0721214556522241
2002	0.614966065167533
2003	1.45572303551829
2004	1.45573190002895
2005	1.51719659598826
2006	1.47086509948869
2007	1.37289637701367
2008	1.33127773351264
2009	1.37545661279669
2010	1.42719195710431
2011	1.39449236537241
2012	1.43752181837621
2013	0.777442704117801
2014	0.126420318087511
2015	0.209321014679146
2016	0.13828073187548
2017	0.113554418573327
2018	0.140996191940677
2019	0.113265896118834
2020	0.0734012327661469
2021	-0.122365336936279
2022	-0.0612388640957491
2023	0.119381069323213