Year	annual %
1961	2.33526460136682
1962	2.2775207876041867
1963	2.425928492694864
1964	2.311690980195804
1965	2.161021681891913
1966	1.9961836677000688
1967	1.8586272299484503
1968	1.7175480169750745
1969	1.6811179233186928
1970	1.7265167730582156
1971	2.2109418517134642
1972	2.1615052228818428
1973	2.1013686025780243
1974	2.100096491985281
1975	2.1870584752797613
1976	2.389468828541594
1977	2.4505958440193427
1978	2.4426637274331164
1979	2.081713748680183
1980	2.080591562958786
1981	2.370197839367072
1982	2.3817157223654934
1983	2.3709032665804157
1984	2.3399097314983934
1985	2.2978523504208552
1986	2.250124775720821
1987	2.1980815267862504
1988	2.1414884340155695
1989	2.0333740065387813
1990	1.7271805331182357
1991	1.670721007761987
1992	1.594102438079303
1993	1.4853765757716073
1994	1.3505173865632003
1995	1.217924996975388
1996	1.0855663103188962
1997	0.9525466888611734
1998	0.8683469082856351
1999	0.6984498970156379
2000	0.3830482945335789
2001	0.281155750727981
2002	0.26008808037709386
2003	0.24525396216913448
2004	0.21725833000547837
2005	0.18538147522591025
2006	0.13094609876745075
2007	0.10287190819882866
2008	0.10364809449962176
2009	0.13079497416959113
2010	0.13051068087293882
2011	0.11010619785763318
2012	0.09218578521659251
2013	0.07945634338930532
2014	0.045981861422657935
2015	-0.0007521798775120222
2016	-0.0554769793457835
2017	-0.11052931220963842
2018	-0.16286574839156717
2019	-0.20808832746840228
2020	-0.22358383501987272
2021	-0.2986138409740438
2022	-0.42448053141121184
2023	-0.4906957870336007