Year	annual %
1970	3.739278721948995
1971	4.175325220503765
1972	4.045175132528771
1973	8.26666666600006
1974	14.2489355382567
1975	9.66969548151245
1976	11.2561425062111
1977	11.989283322105
1978	9.7160327495434
1979	7.739236428066775
1980	10.42269995291261
1981	11.27215970794345
1982	8.33125575581156
1983	5.493665514320905
1984	8.116397955171
1985	4.38934095741541
1986	7.44897137435523
1987	4.08911644641214
1988	5.99925074273699
1989	5.5414598150856405
1990	8.03956867283908
1991	9.029094181163806
1992	7.592048367955204
1993	8.053465911852754
1994	5.127135216988375
1995	6.7410676162313745
1996	4.4663061799924755
1997	3.55029585798821
1998	3.12536579655862
1999	2.64862252295818
2000	1.81294613887089
2001	1.74665224985434
2002	1.83299389002049
2003	1.98196734627545
2004	3.12226204699354
2005	3.10496640148298
2006	3.48340699677866
2007	4.16782330119979
2008	11.2706652380848
2009	2.92089711805361
2010	3.74915727597096
2011	4.5242115050527
2012	3.73120950756887
2013	2.9640049985073746
2014	2.38960503635429
2015	1.5579071134626
2016	2.06884036053473
2017	1.58909413567799
2018	2.08766938046978
2019	1.00582004702137
2020	0.705968661338261
2021	2.30446565742003
2022	4.99476596381044
2023	4.22535211267609