Year	annual % growth
1968	-5.633619502063624
1969	7.464069794671673
1970	-16.66766199377369
1971	10.001519998441495
1972	12.624831010826455
1973	-3.5882701955001153
1974	38.14112654266751
1975	-5.050437892169299
1976	-10.284117027869968
1977	-2.7671549186711104
1978	47.96826932824442
1979	6.593517547112754
1980	9.794033809193792
1981	-2.9132845187143914
1982	-2.430872833637011
1983	15.41424855757083
1984	10.607905895627141
1985	30.507948924875905
1986	-10.532595695988292
1987	-3.956030995511682
1988	1.6306427415527622
1989	-4.628514397552152
1990	7.2109492066068555
1991	9.566955973272911
1992	4.207687992699064
1993	-5.256733290913559
1994	-10.245270716374051
1995	22.195340338042357
1996	-3.71326145342924
1997	6.555357585867938
1998	15.450008607271457
1999	3.453781747981921
2000	0.5509408021923718
2001	24.44438280364831
2002	-5.483087683825474
2003	9.806171469513544
2004	-1.119808707567131
2005	5.75064843441524
2006	10.666678366956887
2007	3.2242186429762683
2008	17.62645868159416
2009	-4.730753706247498
2010	26.681172113283253
2011	5.513450243292553
2012	-5.286526523295706
2013	24.567652461779915
2014	6.662674110925025
2015	12.299999997098382
2016	10.84165370961287
2017	-14.200000000095855
2018	-12.099999998821843
2019	5.900000001097695
2020	-2.9000000040479534
2021	14.06522739593747
2022	0.6632082373335209
2023	5.699999998585881