Year	annual %
1961	2.59354341361398
1962	2.63402390540774
1963	2.68332707980713
1964	2.73394590266095
1965	2.7833399707246
1966	2.83371508534803
1967	2.87240807199467
1968	2.91551546033094
1969	2.9621576257799
1970	3.00020177514605
1971	3.04343179310279
1972	3.08457428598645
1973	3.10198424496887
1974	3.09829370593342
1975	2.78657684536874
1976	2.46083279937368
1977	2.41813965975759
1978	2.37609733976875
1979	2.32010802858839
1980	2.26897335528598
1981	2.23178324245008
1982	2.17312144774999
1983	2.08197793988306
1984	2.52381496535455
1985	2.9929202774016
1986	2.97618241720109
1987	2.95794132951344
1988	2.91250418130539
1989	2.88005965452853
1990	2.81691162830882
1991	2.779776802472
1992	2.74597223403598
1993	2.86268606275743
1994	2.8520446261962
1995	2.70139713559943
1996	2.67284423332925
1997	2.05368351414271
1998	2.13796271463219
1999	2.67047567259907
2000	3.81697887153797
2001	3.75963307173171
2002	2.34039442531377
2003	2.76801614231128
2004	3.39770601248237
2005	3.59877196603076
2006	3.75360549915507
2007	3.68155876257458
2008	3.3131079690881
2009	4.01710592389119
2010	4.15589722236467
2011	3.24414124523082
2012	2.77600777570712
2013	2.40667969204573
2014	2.39028820797079
2015	2.38840507871515
2016	2.38886575467523
2017	2.3910852337636
2018	2.39418462530963
2019	2.355238072353
2020	2.33208625068898
2021	2.31648825280279
2022	2.28055584966535
2023	2.25962565586274