Year	annual %
1961	2.502288189736518
1962	2.35127905147381
1963	2.686899124292893
1964	2.5474988709299993
1965	2.652404599714359
1966	3.20586501399589
1967	3.1462220056261927
1968	2.450480804461982
1969	3.8347824278768385
1970	4.5217522129127445
1971	5.922593680680343
1972	6.681292323175825
1973	14.758346008646171
1974	23.172937535320138
1975	10.714687806629918
1976	10.985861412095304
1977	10.512397302476941
1978	9.50919888329011
1979	15.088434074157796
1980	17.0107892918965
1981	8.460265310411927
1982	7.375667576885213
1983	7.13811504480536
1984	8.936292738581656
1985	7.062314258780781
1986	4.626291721385371
1987	9.490742515211629
1988	7.5564064420380745
1989	8.50493843632156
1990	11.415688998885322
1991	23.71325751258337
1992	14.08292063492864
1993	13.624424659552844
1994	20.616988811917707
1995	10.838319455778304
1996	10.247657332903557
1997	7.059671935016787
1998	5.6628447230408625
1999	6.888834101227431
2000	9.389713549040707
2001	6.119229850113996
2002	5.502324113069903
2003	5.623192590544562
2004	7.765278534605798
2005	7.026790842590074
2006	8.848192932659614
2007	7.063421716942344
2008	9.372730255634679
2009	2.288652044783504
2010	6.260416910567713
2011	6.866077816353069
2012	4.060109619635334
2013	2.662348759917201
2014	2.4499539343407832
2015	2.2255971962589953
2016	2.85015902860426
2017	3.7251727279074416
2018	3.383515709706984
2019	2.435056833369508
2020	1.4314158962752686
2021	6.05975657609514
2022	8.540518351847645
2023	4.524763557274468