Year	annual %
1961	2.8450369078062607
1962	2.8457746080956525
1963	2.837645571376484
1964	2.820672321536108
1965	2.792045006308868
1966	2.7432506660634033
1967	2.6906802388767517
1968	2.6404728704832507
1969	2.5941821491814068
1970	2.5523908694925694
1971	2.517219819311862
1972	2.4927311770251777
1973	2.4728438481903368
1974	2.4473222172626947
1975	2.413739816824261
1976	2.3805801059346976
1977	2.3817322524345172
1978	2.3874852562119315
1979	2.358138762589661
1980	2.3014936106245045
1981	2.2093755199340706
1982	2.1588449628702477
1983	2.150780859448574
1984	2.1142559070194125
1985	2.062871820159671
1986	2.010877039952021
1987	1.9667275787059282
1988	1.9387231150875976
1989	1.9051059258856924
1990	1.901318720175567
1991	1.877242224251944
1992	1.8195612401294028
1993	1.7795262945865744
1994	1.7467191217257891
1995	1.707769645694242
1996	1.6563986088772111
1997	1.6145202981432476
1998	1.5750232220686229
1999	1.5307664128212224
2000	1.4818479531463424
2001	1.429496296784862
2002	1.3766352116081748
2003	1.3161009800281676
2004	1.2772431430297075
2005	1.2469311922396429
2006	1.203451216832164
2007	1.1648088829146985
2008	1.126891153564543
2009	1.1036553119850794
2010	1.0515594835994762
2011	1.1411560631016755
2012	1.1277305421246666
2013	1.0915485774247742
2014	1.065479894571709
2015	1.0458019990958718
2016	1.0410813400546033
2017	1.0637068105530147
2018	1.0938833327032569
2019	1.0546114526386248
2020	0.9111963652642885
2021	0.763974592333355
2022	0.6908856160317214
2023	0.7088070035489835