Year	annual %
1961	2.46240496287868
1962	2.52809631275193
1963	2.57813996048135
1964	2.62928376478602
1965	2.67964351300075
1966	2.59524411062539
1967	2.62103647343565
1968	2.75260071503388
1969	2.76853725035396
1970	2.78627275275661
1971	2.75710818913712
1972	2.6844182693907
1973	2.65090859876121
1974	2.55484975424859
1975	2.39783456781735
1976	2.47867856973028
1977	1.89588728123602
1978	1.66012086198244
1979	1.44822378426594
1980	0.53553788649059
1981	2.46853057090048
1982	3.81945997283751
1983	2.70874939243861
1984	2.49942512776154
1985	2.72526766989943
1986	2.86128101383493
1987	3.3135359540021
1988	3.7997099051442
1989	3.71438044976345
1990	3.57654149352685
1991	4.21131883429154
1992	4.0695064434744
1993	3.36527734385744
1994	3.34279827514085
1995	3.28301525569969
1996	3.203571284763
1997	3.12815909570078
1998	3.06048395903298
1999	3.0281142940097
2000	2.95880518919236
2001	2.92127105923873
2002	2.93296991314103
2003	2.90590770385319
2004	2.87241402666675
2005	2.83962299391293
2006	2.82672932299161
2007	2.85154384116412
2008	2.83863160180599
2009	2.80357593483215
2010	2.82098186260834
2011	2.85029677836164
2012	2.82765624318832
2013	2.74962070654197
2014	2.70542811266671
2015	2.69539316663887
2016	2.71605397227228
2017	2.72133142564532
2018	2.67332102071494
2019	2.656010133459
2020	2.65485915620519
2021	2.60431928274974
2022	2.54208920295403
2023	2.5187790536759