Year	annual %
1961	3.012055313021662
1962	3.2661788636543037
1963	3.2708148556765764
1964	3.237345530458157
1965	3.1081488674567623
1966	2.9534822604965
1967	2.7296029818017757
1968	2.7299601340315007
1969	2.7440671074758285
1970	2.7457175392081865
1971	2.8530232326677663
1972	2.90910657887342
1973	2.7821311240971482
1974	2.8895594758367054
1975	2.9308327092887936
1976	3.022042111746842
1977	2.9794467003878964
1978	2.906327290863018
1979	2.8104808291261634
1980	2.7299842907151657
1981	2.5191508688906907
1982	2.5393273651321806
1983	2.294748145614477
1984	2.2862692490934933
1985	2.417382707150068
1986	2.4981118338185127
1987	2.5476799758041153
1988	2.538858020551828
1989	2.530838874263594
1990	2.552669105571411
1991	2.307059159375598
1992	1.2379422926945125
1993	1.025827995535792
1994	1.390204757515619
1995	1.3421319346532243
1996	1.6138956811876994
1997	1.7341457682881867
1998	1.703747030738441
1999	1.831287551054416
2000	1.8056166449754016
2001	1.6900919143968451
2002	1.6220554919053
2003	1.6300983795807014
2004	1.8005009262454337
2005	1.9176106216710451
2006	1.9108275681065265
2007	1.9155615462971554
2008	1.9472536604628488
2009	1.8602378012880791
2010	1.4725498235418968
2011	1.0551942193793593
2012	1.2466485890393528
2013	1.5200081483782952
2014	1.6786223604495802
2015	1.733223898748932
2016	1.676775370601021
2017	1.72360568945129
2018	1.6649001999612096
2019	1.4218520033458333
2020	1.0592669780133122
2021	1.005112297835126
2022	1.5012902019446557
2023	1.550470138933278