Year	annual %
1961	2.3861112735410974
1962	2.5413587522523797
1963	2.6653919581569
1964	2.703672556460943
1965	2.759293390373542
1966	2.810081807433988
1967	2.8491955794306243
1968	2.8828899043085148
1969	2.9181028487214054
1970	2.936230861901118
1971	2.926884078999471
1972	2.9128984755157754
1973	2.906856985564076
1974	2.889771989417346
1975	2.8730270046852495
1976	2.8604837318636513
1977	2.8446918903036624
1978	2.819496960986336
1979	2.7644740174406257
1980	2.681795659926193
1981	2.5986960738145233
1982	2.510466961898535
1983	2.446498291150952
1984	2.3844322372854148
1985	2.3120684490092183
1986	2.240115424891757
1987	2.1665354815037663
1988	2.0743859194988383
1989	1.9797442892495305
1990	1.6970297963830543
1991	0.7170248707287111
1992	-4.880908904310632
1993	-5.7235643045235465
1994	-0.980995150386988
1995	0.08543806618282357
1996	0.7067116824803675
1997	0.5181156758132256
1998	0.5962929204406032
1999	1.1333981059141456
2000	1.4223257149114326
2001	1.2586260184430196
2002	1.0938873969353873
2003	0.9299233106706778
2004	0.7706136650462068
2005	0.4067879363155372
2006	0.3990498723954293
2007	0.11847093467989753
2008	0.04235461299616669
2009	-0.021283665735676964
2010	-0.0764848306164782
2011	-0.12049530678012477
2012	-0.13829167368852932
2013	-0.1620553240189942
2014	-0.21174342170792176
2015	-0.29684500977335704
2016	-0.36156468145012144
2017	-0.3827681979166158
2018	-0.43706256779870417
2019	-0.5192874320985952
2020	-0.5576730098628843
2021	-0.5641855956230151
2022	-0.5596702311119077
2023	-0.5532350743419152