Year	annual %
1961	2.2177453507130167
1962	2.16214540899324
1963	2.166122412742723
1964	2.1637889777730948
1965	2.1163881570326737
1966	2.0511271181333512
1967	2.0398089197577747
1968	2.0726970884438174
1969	2.0854334453459984
1970	2.0492214328098726
1971	1.870197258461431
1972	1.7946801913617918
1973	1.9384808940389462
1974	1.9135542722003294
1975	1.8454787726306847
1976	1.7960758215752435
1977	1.7917485036424807
1978	1.7945416138589252
1979	1.7821284367605728
1980	1.7885026397872537
1981	1.8240200745538857
1982	2.0079555992169134
1983	2.0732676837523343
1984	2.069636602525904
1985	2.0461019319382814
1986	2.0022163397765524
1987	1.9592949790381056
1988	1.9425381895205902
1989	1.942395068907075
1990	1.8895694103392913
1991	1.8543363304816154
1992	1.9157618787373707
1993	1.9420388075999142
1994	1.8990316156107099
1995	1.8249828335104041
1996	1.7568050900530068
1997	1.7173100676230604
1998	1.6944483250094606
1999	1.6711364488761262
2000	1.627086534003169
2001	1.5539037825297157
2002	1.4601711819294252
2003	1.3897248632968484
2004	1.2791172490176734
2005	1.1905308010552176
2006	1.0968015529120692
2007	0.9925956274035315
2008	0.943882917236067
2009	0.9480626075654328
2010	0.9460230260580431
2011	0.9328570111827048
2012	0.865309383348432
2013	0.7821627566533493
2014	0.7123603705617683
2015	0.6320727014037573
2016	0.6005479050432001
2017	0.5859724600087048
2018	0.5367163699949771
2019	0.47205538034531
2020	0.4325112566767757
2021	0.3176463900244073
2022	0.17830640113282925
2023	0.23349426440783816