Year	annual %
1961	2.857034145970246
1962	3.221674297459586
1963	3.226107320354359
1964	3.222713755987087
1965	3.106574321055362
1966	2.9208429886929252
1967	2.6851675395499655
1968	2.711901429434647
1969	2.748558626760911
1970	2.801357502201938
1971	2.997955988835983
1972	3.0605603248317266
1973	2.8538756301781802
1974	3.0774946013555393
1975	3.161210112968419
1976	3.281713300839911
1977	3.2540329780538713
1978	3.1781439851238815
1979	3.074453061604416
1980	2.9549658157042415
1981	2.8896066769536617
1982	2.8938076840804285
1983	2.5452871777759185
1984	2.518369227482495
1985	2.688852325379571
1986	2.8121505470006127
1987	2.8510506365461197
1988	2.8461116484017595
1989	2.841340315314824
1990	2.9105411632566245
1991	2.6126402346146023
1992	1.1833705019881364
1993	0.8933561512007486
1994	1.378759723494369
1995	1.2866085013770885
1996	1.6053921522021284
1997	1.7834203702261817
1998	1.7447066554726547
1999	1.9304202938099024
2000	1.9048708142963306
2001	1.7650320445960546
2002	1.7274778983389325
2003	1.7614341546132692
2004	2.004170055697088
2005	2.1862309110976668
2006	2.168452307390041
2007	2.168269848849036
2008	2.2017146574646773
2009	2.089084074561981
2010	1.5889344140665287
2011	1.0391986450664348
2012	1.257901301951165
2013	1.6121871218188772
2014	1.811634978631659
2015	1.878788682376026
2016	1.8101037788406558
2017	1.8684090210930862
2018	1.7295491179195892
2019	1.4436669313760717
2020	1.0059367777712396
2021	0.8966963849723442
2022	1.5375026831418523
2023	1.5693800145546675