Year	annual % growth
1961	6.587157588288321
1962	-0.35001215910538974
1963	6.657034518591615
1964	18.551709134044955
1965	23.768211880971762
1966	11.351342765669997
1967	13.927482773800364
1968	23.589173992150748
1969	8.508669360816555
1970	9.334378828318819
1971	1.2571780865059168
1972	33.92818357403257
1973	4.256373155098942
1974	50.75399120794944
1975	35.18922803967746
1976	29.76746260432651
1977	1.8576998013956967
1978	-18.853707062278446
1979	-33.47125428123451
1980	15.193313548758326
1981	-13.41245353520749
1982	-6.8634221376968725
1983	30.312231139878406
1984	-23.38167581835225
1985	-9.749040706974526
1986	-3.823307698213341
1987	-0.8969701054383705
1988	-35.07236148668791
1989	20.254023578570894
1990	24.06096428406373
1991	30.381398696582778
1992	-7.412955090849962
1993	-27.32653671480051
1994	-30.6495433341548
1995	28.78608087673365
1996	28.378249413248483
1997	-2.835345061171978
1998	1.321542163982599
1999	3.725662322862817
2000	4.361777796377808
2001	14.769257070175286
2002	18.33611027099022
2003	18.0187256450576
2004	5.472552988856933
2005	-3.4188262185543152
2006	4.997313920597946
2007	12.996355128882868
2008	9.673382884071557
2009	3.1532065634476396
2010	9.705329764412696
2011	-4.326679083897972
2012	-7.102462258779568
2013	-9.040550193370933
2014	4.025270460252344
2015	-38.966690818665825
2016	32.81608578935439
2017	6.657109726218664
2018	-4.686038936209471
2019	-8.284694285929106
2020	19.891878894943304
2021	3.3302250478916164
2022	1.2263032454203255
2023	3.3281171018152804
