Year	annual %
1961	4.477638857692227
1962	4.476290652591629
1963	4.446228051451627
1964	4.405612956291719
1965	4.23972136241548
1966	4.163817984446354
1967	4.084655569162905
1968	4.017009627336492
1969	3.9438887915729026
1970	3.8754240925002534
1971	3.8376990563988613
1972	3.784940988542232
1973	3.71157808823466
1974	3.6626638710101105
1975	3.6131276218338826
1976	3.557254478138887
1977	3.539198593787688
1978	3.526147555876747
1979	3.471001186139901
1980	3.400949108592144
1981	3.27384055034328
1982	3.1614794827622035
1983	3.108631725474069
1984	3.0523610813311848
1985	2.9855037002657525
1986	2.9077491078316484
1987	2.8415074409005
1988	2.7941679740672214
1989	2.7375257532144417
1990	2.7034963325530015
1991	2.620883282909219
1992	2.528158043193997
1993	2.4674721524198873
1994	2.4380450380496512
1995	2.386452812215296
1996	2.3020041644736864
1997	2.2670986136592575
1998	2.2129474586076725
1999	2.140767405108292
2000	2.0799325742760573
2001	1.9022536014658584
2002	1.8106363064780027
2003	1.740692461308953
2004	1.6824190858643107
2005	1.6439154515438332
2006	1.5949243065241205
2007	1.5498611996692944
2008	1.503020476101284
2009	1.4689173831625766
2010	1.409057654081323
2011	1.4872599015684216
2012	1.4616017908886363
2013	1.419689752739231
2014	1.3874977620067455
2015	1.3618701933080501
2016	1.3334882015581684
2017	1.2895618901899866
2018	1.2166724981295118
2019	1.1841387041439049
2020	1.11827284861306
2021	0.9843724906999398
2022	0.9629161004291831
2023	1.0406312116326006