Year	annual % growth
1971	2.11655921079074
1972	3.914976873924772
1973	4.051273961804895
1974	0.9946740778515846
1975	-1.9892926738930328
1976	6.006177146035839
1977	3.2482109359522724
1978	3.9124969809467274
1979	6.239587792844432
1980	1.1543516979530324
1981	-1.4351660617435869
1982	1.23251983890664
1983	1.9392310263313846
1984	3.0869147894372304
1985	2.6516985454021267
1986	5.631728501552956
1987	4.023615981768387
1988	4.1467637081100435
1989	3.010278413427045
1990	2.1034474657427324
1991	2.0120925654058226
1992	0.14818526284423683
1993	-1.5891570051645516
1994	1.690462675654274
1995	2.930727143402251
1996	2.083713132059998
1997	2.4580220100930035
1998	2.2851449775337755
1999	1.8944552177852358
2000	2.0418673912309373
2001	2.357157375882977
2002	0.06420473479266775
2003	0.1657513489192297
2004	1.3766867307754609
2005	0.17515542584656885
2006	1.0947991788939646
2007	1.2816166443692794
2008	-3.3945224226580706
2009	-4.0313885376342
2010	0.2295149588063623
2011	-0.3107439679944264
2012	-3.8935822150220076
2013	-1.5374032447198687
2014	1.0619724892302997
2015	0.6685459666124984
2016	3.8930795878462447
2017	1.7392829828019671
2018	1.4657033769299659
2019	0.392058921859757
2020	-9.433004454756073
2021	6.1725606605079975