Year	annual %
1961	2.7430764902253943
1962	2.7620396720121834
1963	2.7548539309116915
1964	2.790231414331952
1965	2.8007413315284135
1966	2.7959932989688663
1967	2.809871355097511
1968	2.6774647803641227
1969	2.757413055324191
1970	2.777970664814794
1971	2.7912947984440732
1972	2.834327066306214
1973	2.828446054065634
1974	2.7810632494482133
1975	2.7553588231752633
1976	2.703780493777954
1977	2.6373389041900475
1978	2.499254148210119
1979	2.8045806966118194
1980	2.669970037799318
1981	2.5340695867920235
1982	2.505155873265418
1983	2.695905188377378
1984	2.6500492435997463
1985	2.654037832748268
1986	2.7178358480847353
1987	2.6827637479309905
1988	2.4387803014315312
1989	2.2738486949397263
1990	2.2487926746182123
1991	2.17970301385648
1992	2.126084454727437
1993	2.7577142021833385
1994	3.4699512207568257
1995	2.7706675930494455
1996	1.4470989197815498
1997	1.6083156906123657
1998	2.161180293927808
1999	2.185046711934325
2000	2.371940809430532
2001	2.2504582889087383
2002	2.1374451389861804
2003	1.9215806420729868
2004	1.909200788919292
2005	1.9487655967472088
2006	1.9606693462440088
2007	1.9397967168000494
2008	1.8390846026308951
2009	1.5944569446821453
2010	1.653644803077068
2011	1.8968640035909856
2012	1.928179233794473
2013	2.0227066692745725
2014	2.100496619507975
2015	2.307316220511918
2016	2.424310630768819
2017	2.301416522429607
2018	2.103404355268127
2019	1.9224663270740436
2020	1.8977235194152509
2021	1.878559910158712
2022	1.8153816026356833
2023	1.7646321229024202