Year	annual %
1961	1.1089522877256712
1962	0.669801768070073
1963	6.29500582137274
1964	1.4052430123542763
1965	1.9437990239703424
1966	2.272485051627001
1967	1.1062418074539266
1968	5.16005473429982
1969	1.9043229526072736
1970	3.1495090141748534
1971	2.965899222616102
1972	4.783127723515463
1973	4.767711390939283
1974	4.35092638515269
1975	-0.6614752727624165
1976	5.9123354909134065
1977	5.988341619440845
1978	2.840356742787179
1979	2.6069419839225247
1980	0.5649118692193582
1981	-2.370840385080612
1982	-6.386714490782694
1983	-5.117989399048355
1984	-3.184388005567911
1985	-2.8517089401924665
1986	-3.950497361165887
1987	1.3310239491942468
1988	1.3312870276779734
1989	1.2407569636685025
1990	-0.10091629552049142
1991	2.442966293247963
1992	1.872681333016729
1993	1.6254020641965212
1994	1.5069529876005703
1995	2.3050662961394863
1996	0.11956452028682918
1997	2.0450990784859187
1998	2.9651160122663214
1999	1.236089696875169
2000	1.1654110197089693
2001	0.5886225896131236
2002	0.3513459557376706
2003	0.44784474176699973
2004	0.711851875270014
2005	1.0956561978006079
2006	2.754155463724402
2007	4.028343581491356
2008	2.2158646183815023
2009	-1.7529182818748126
2010	0.41691031562984904
2011	2.006943594035164
2012	1.9106905378923926
2013	1.6177068380123671
2014	2.343654111472887
2015	2.556845475210906
2016	1.2137833958391298
2017	1.4823948372751232
2018	1.8298905108085677
2019	2.628890713383015
2020	-3.2895612582530305
2021	5.730598489049683
2022	3.0926603178504735
2023	2.363398442386824