Year	annual %
1961	2.9552990823640375
1962	2.728673723265106
1963	2.572051737323362
1964	2.434231405690658
1965	2.402163913355128
1966	2.3262239552383175
1967	1.8035495821028886
1968	1.4416352052529524
1969	1.3365345521610128
1970	1.3136303477564726
1971	1.2688152462381554
1972	1.373753403051986
1973	1.4176432124427012
1974	1.65729061044093
1975	1.8645068130435993
1976	1.7310782114335799
1977	1.3473227919158572
1978	0.9832534182998943
1979	0.896908931208085
1980	0.8374067846692954
1981	0.7503129555897831
1982	0.40842197328329105
1983	0.03573370068092108
1984	-0.0988690977736898
1985	-0.15763204945423684
1986	-0.09073199992657002
1987	0.24455943895342638
1988	0.4062746457542291
1989	0.25884985275782246
1990	0.17898617069475184
1991	0.3051229073387068
1992	0.5753112751939868
1993	0.8030316838136067
1994	0.9003646747063591
1995	0.9171052338204357
1996	0.915268493786074
1997	0.9162673470919914
1998	0.9100747144115949
1999	0.8920313207985753
2000	0.8653399036770818
2001	0.7065646630031743
2002	0.7544761543656078
2003	0.7433758172817237
2004	0.6445128546212535
2005	0.5973269740550586
2006	0.6987501942343094
2007	0.8709332194914198
2008	0.969751715144441
2009	1.002665179412858
2010	1.0499309815294204
2011	1.135025030695196
2012	1.1888733423131792
2013	1.2090339987435412
2014	1.1976560344576783
2015	1.185299274868158
2016	1.2510171764429967
2017	1.2910921650754283
2018	1.2483911833127057
2019	1.2738951944840191
2020	1.6206088097960993
2021	1.9477036103600895
2022	1.793206950825495
2023	1.6038202217620885