Year	annual %
1961	2.56381102590686
1962	2.59969435582652
1963	2.64958422880367
1964	2.67524021558525
1965	2.74635039458784
1966	2.84634316319423
1967	2.91320258928795
1968	2.93764508584771
1969	2.90299166995236
1970	2.86221657843084
1971	2.74689154282273
1972	2.66986839688998
1973	2.69217808128412
1974	2.68403404923439
1975	2.65635395653505
1976	2.57916355477329
1977	2.51079530919454
1978	3.08022604755108
1979	3.48641276944389
1980	3.06393041191748
1981	2.76608306113668
1982	2.73536091690952
1983	2.7470991708152
1984	2.97101447640962
1985	3.0331938715881
1986	2.95928285259829
1987	3.06503556376214
1988	3.12224280721746
1989	3.13791463486827
1990	3.28116908153439
1991	3.29964939656104
1992	3.01236457976563
1993	3.20523288626427
1994	4.76369168760456
1995	4.18422480056387
1996	1.90595041213998
1997	1.58195749260887
1998	2.36640881944012
1999	2.8603206446613
2000	2.89884128806625
2001	3.01946582164363
2002	3.05700023925831
2003	2.94405110630979
2004	2.98105657054334
2005	3.11546176922533
2006	3.1871715188242
2007	3.21553799022491
2008	3.19974361408747
2009	3.19424675479088
2010	3.24688069782067
2011	3.35179391507681
2012	3.35665613143748
2013	3.4091449670035
2014	3.44601675819051
2015	3.38939131180859
2016	3.46603464808537
2017	3.44276695760094
2018	3.27282723445499
2019	3.18628838899818
2020	3.22447844328183
2021	3.22252815991252
2022	3.19783510453186
2023	3.23230523620325