Year	annual %
1961	3.03033127728201
1962	3.04203773101787
1963	3.01890555338579
1964	2.94676444638627
1965	2.84608756023468
1966	2.70452747215214
1967	2.55633657403215
1968	2.46589974699603
1969	2.41802352363754
1970	2.40409940772393
1971	2.35926598575485
1972	2.33278300790499
1973	2.3879804780329
1974	2.43359463143772
1975	2.46392762759129
1976	2.48341266784309
1977	2.56007131418141
1978	2.62479563836581
1979	2.60544470412561
1980	2.61177455176428
1981	2.60569692601485
1982	2.59375588917813
1983	2.63596772165165
1984	2.71653205425924
1985	2.83077681264638
1986	2.93891981341768
1987	3.00329838283602
1988	3.01956255127948
1989	2.95463770412295
1990	2.8777395694329
1991	2.81665890726164
1992	2.78718569050924
1993	2.78577768971806
1994	2.78818789567647
1995	2.76003344637661
1996	2.7051266156806
1997	2.67135891326744
1998	2.60752186212402
1999	2.52672176362693
2000	2.54459366705921
2001	2.57014353027485
2002	2.51634742159783
2003	2.44260643657749
2004	2.3720084635771
2005	2.30336382151543
2006	2.23485955352487
2007	2.17608980403121
2008	2.08818532017883
2009	1.97892341382596
2010	1.75828740323151
2011	1.61104342924472
2012	1.61813131846729
2013	1.58743980435977
2014	1.55301827143161
2015	1.49940972361564
2016	1.4620698661924
2017	1.41536933264598
2018	1.31563682048248
2019	1.24151463105699
2020	1.19985962233223
2021	1.11985399101
2022	1.07936374148797
2023	1.08520231604055