Year	annual % growth
1968	16.764173784561095
1969	11.31743097328426
1970	-1.4708676904977978
1971	-11.9837833110697
1972	-11.957958443240685
1973	11.301690412321676
1974	-1.046729585986796
1975	-22.029523873081274
1976	-4.9789688461086286
1977	6.556835582679895
1978	11.261702596108748
1979	21.609840539482676
1980	-24.35806622470642
1981	-14.8518068002152
1982	-21.73510212206547
1983	-23.42875592682408
1984	-12.642304989795122
1985	12.299895439262329
1986	13.968481360151586
1987	-8.422375857637235
1988	-9.471516814839546
1989	33.43442001786286
1990	-26.77819030255614
1991	29.044397969218068
1992	-8.839461281257087
1993	-3.166214699356999
1994	-4.0968044150763205
1995	0.6888250394776492
1996	69.35307974014978
1997	-54.34198857546724
1998	18.607348319762536
1999	-11.004202479107505
2000	57.82806407259912
2001	51.952556514643334
2002	21.75508465732328
2003	16.177298409234623
2004	-5.531129468893795
2005	4.2046800124672785
2006	-5.573826720042021
2007	-2.094699434406124
2008	2.741896022231387
2009	27.327552748194805
2010	31.700308617162875
2011	85.76571711253362
2012	17.989577119865857
2013	20.824476911544338
2014	-1.2593667256998202
2015	-18.26954337322985
2016	23.922510571789005
2017	6.288283316468807
2018	-11.541768067767492
2019	-7.03454669632832
2020	7.490297151175838
2021	46.625731336855836
2022	36.01662639728707
2023	11.984282907662092