Year	annual %
1961	5.48853356865667
1962	5.544739127734887
1963	5.591435116343766
1964	5.609911347374784
1965	5.60929055555042
1966	5.618996986691304
1967	5.611579294325339
1968	3.802236534437337
1969	3.8053704828993262
1970	3.8395317484585925
1971	3.87476949690244
1972	3.890904481815293
1973	3.901910989941902
1974	3.899203209257081
1975	3.895282676203183
1976	3.910749628015744
1977	3.915561632644567
1978	3.9318683355904076
1979	3.937577813131206
1980	3.951147063893927
1981	3.981958099512025
1982	3.9840024201558792
1983	3.9928757220879096
1984	4.335066626542089
1985	6.366564870856122
1986	6.317821967615152
1987	6.2380325144539235
1988	6.173840641808772
1989	6.047661812194029
1990	5.8361223862368865
1991	-1.728970908315403
1992	-2.433477653546892
1993	6.5797894409844275
1994	6.496920924725752
1995	8.894025566543595
1996	8.236049178352282
1997	4.562745611633275
1998	4.67944389740104
1999	4.727796547391283
2000	4.790097387610015
2001	6.057256464988719
2002	6.58989764932487
2003	7.21204450132512
2004	7.150540166630283
2005	5.504640792180393
2006	4.708757182439886
2007	4.556501820548896
2008	5.618101770712263
2009	4.271408429481719
2010	3.7404718227258904
2011	3.563503517898177
2012	3.060124275272777
2013	2.991899258590621
2014	2.4562065389709122
2015	2.123184677993184
2016	2.3663726933670812
2017	2.530319023219304
2018	2.997765849718541
2019	3.103824650398885
2020	3.165100157385163
2021	3.3273386520213672
2022	3.2576343344194876
2023	3.240398334269191