Year	annual %
1971	5.622345943225412
1972	5.577384055925734
1973	9.964066763623862
1974	4.148113882412247
1975	4.822183506165501
1976	6.199211933187925
1977	4.613925843015636
1978	2.16033425878544
1979	7.634745751572723
1980	6.236781769770275
1981	8.637631787008203
1982	29.66566311597532
1983	29.319178168199755
1984	25.24644754362278
1985	19.00004672624054
1986	69.6611853546114
1987	27.259990113419065
1988	21.6536391309226
1989	22.315573420832663
1990	17.279181168489515
1991	25.818670567109805
1992	26.22021362608504
1993	0.6737572773863718
1994	1.4280016398634103
1995	5.951338300531589
1996	1.5459682370531738
1997	1.434126666367817
1998	3.3246404448857447
1999	4.227675306702096
2000	6.300123958362519
2001	1.7524263185358109
2002	0.4327723766588605
2003	15.910696557568443
2004	16.52158332333677
2005	27.390845372339484
2006	37.58404182185515
2007	13.618875942629245
2008	16.705124399657407
2009	1.7710292430526096
2010	16.10261759621001
2011	8.99929083812954
2012	11.515970683051748
2013	4.329351573956927
2014	2.6158966829377306
2015	2.9722893544020366
2016	5.668948450346804
2017	10.35650236127583
2018	7.059084425711902
2019	9.402907657988209
2020	4.6939380289855706
2021	11.499999999459149
2022	10.992148998027119
2023	7.393203026553621