Year	annual %
1961	0.19901077425834046
1962	1.3130665398253853
1963	2.3224218820866156
1964	2.2324951855760276
1965	2.244248904323314
1966	2.424063118851464
1967	2.2959036016936523
1968	2.3060296939116256
1969	2.3689454754019863
1970	2.368706288059059
1971	2.3580005761600944
1972	2.183515302087642
1973	2.070568974015046
1974	1.928235865860799
1975	1.7406487152215107
1976	1.6383749924651312
1977	1.5202952142810062
1978	1.459065853265713
1979	1.4388503972132156
1980	1.4118393515301335
1981	1.4348119347199741
1982	1.5431398198265498
1983	1.5162601535841276
1984	1.440610695584681
1985	1.4623375524265043
1986	1.529142492229795
1987	1.5901002137289595
1988	1.5729496081447962
1989	1.4806834094062395
1990	1.37333499886212
1991	1.297980270616634
1992	1.2046109041399404
1993	1.1228097964019383
1994	1.0844629384864106
1995	1.0294019532810665
1996	0.9980164735233785
1997	0.9729757896244564
1998	0.9248177969333256
1999	0.848334912053943
2000	0.7590447606906707
2001	0.7176442349218206
2002	0.6731903141625111
2003	0.6510076117347978
2004	0.6372969770764172
2005	0.6409463563817894
2006	0.6435640729634855
2007	0.6388630383923584
2008	0.64884483070567
2009	0.6398348686362851
2010	0.5942586062814428
2011	0.631740228836918
2012	0.7274788843997726
2013	0.7329258147571664
2014	0.703057487064811
2015	0.6452443976591127
2016	0.6222270657544726
2017	0.6336233503333233
2018	0.5452960861379523
2019	0.46169637536523567
2020	0.3417141832194659
2021	0.21361095570490818
2022	0.09224826503668737
2023	0.06472071189998019