Year	annual % growth
1961	5.715028755486614
1962	18.918701119906302
1963	12.878909494289672
1964	11.409491332477373
1965	7.830916971620212
1966	22.34635036386487
1967	21.005223897318317
1968	16.22637155885363
1969	8.766231254403294
1970	2.6835215415764964
1971	-13.213396105678981
1972	12.802882777366563
1973	23.61946033707906
1974	-5.7070963924279
1975	-1.8422015431596321
1976	7.5064911243140955
1977	19.700861513756024
1978	6.666824913275178
1979	20.898332323974998
1980	-0.16161215597087164
1981	0.5619489763623875
1982	-14.624729112892254
1983	32.763981816194445
1984	7.632511122664027
1985	-12.667746655536334
1986	-0.9285166221825989
1987	33.55854839141725
1988	39.56444955545558
1989	21.588494883070126
1990	23.686658832752656
1991	12.938362782856402
1992	8.96838894452236
1993	13.225599548689075
1994	17.480234447027726
1995	22.97036074322905
1996	-3.248657366335891
1997	-8.685943637879987
1998	-19.55547895995072
1999	11.397191691359154
2000	25.958645973338236
2001	1.4682225552491843
2002	6.221028080775355
2003	11.096154570160934
2004	20.30494114241357
2005	16.189843251866705
2006	2.943408662165041
2007	4.200380557328472
2008	11.398641794841154
2009	-20.772293338596853
2010	22.955528530022207
2011	12.400278443764819
2012	5.629497634237325
2013	1.680637040732563
2014	-5.298331498026002
2015	0.003921261682933164
2016	-0.9917006817633478
2017	6.227234618862255
2018	8.27429587315605
2019	-5.166684606214275
2020	-13.910858968030723
2021	17.771041775116586
2022	3.6096343767773647
2023	-2.247592370757019