Year	annual %
1961	2.3797012269259
1962	2.31242006400112
1963	2.38650385787809
1964	2.45821545233956
1965	2.51791971765606
1966	2.58539639564733
1967	2.65320120242553
1968	2.69973737137522
1969	2.7278332638243
1970	2.76002653560861
1971	2.64293253752341
1972	2.64348946760201
1973	2.80164442306919
1974	2.85762988601594
1975	2.94612675483924
1976	3.04151169440751
1977	3.11232079319945
1978	3.17633071983058
1979	3.44063933128741
1980	4.07154578640826
1981	4.42312479149621
1982	4.13542839724215
1983	3.63597146977849
1984	3.15935942130459
1985	3.26273876924285
1986	3.53730585510265
1987	3.54659790712452
1988	3.50310414413814
1989	3.37181635871608
1990	3.29747116559875
1991	3.23064337372364
1992	2.62588681084768
1993	2.55855603034947
1994	2.90337795268012
1995	2.95211131596515
1996	3.04613837555745
1997	2.94060702615898
1998	2.89123826209315
1999	2.8584443558606
2000	3.07555291166784
2001	3.09207918437975
2002	2.50885975954029
2003	2.1893881210377
2004	2.23514920732307
2005	2.15849215504399
2006	2.0985131417675
2007	2.14152397156301
2008	2.17888921699852
2009	2.2291625346925
2010	2.25257934512803
2011	2.11083457768435
2012	1.7979754297027
2013	1.53689764905925
2014	1.40918297342086
2015	1.29655172364692
2016	1.20405567252781
2017	1.32813543357738
2018	1.5371724033626
2019	1.6079813474837
2020	1.73302782045863
2021	1.83406208240793
2022	1.89324559780014
2023	1.9571034315941