Year	annual % growth
1971	3.2031093378752473
1972	4.5937720348995725
1973	5.26796238871286
1974	-0.7806573231708
1975	-0.3271863468431917
1976	4.004799988339698
1977	2.2523287132958387
1978	3.9786958702026567
1979	2.8805568956436645
1980	-0.1827758599578999
1981	-1.183217973572141
1982	0.9346144553034321
1983	2.094387409769709
1984	2.506991788498098
1985	2.6740245634358217
1986	5.327370239021548
1987	3.1949329093192773
1988	4.450706101919749
1989	3.239545163205321
1990	3.0092531906352775
1991	1.693766795817993
1992	1.5767190624546288
1993	-1.571033257751111
1994	2.370584762070834
1995	2.306135679703189
1996	2.5793628935973913
1997	3.490436293843487
1998	3.595005868263627
1999	3.366765861697175
2000	3.693888060543287
2001	2.1375890722405586
2002	1.2765967053638434
2003	1.975534007211749
2004	3.52777733912437
2005	2.766459332596696
2006	3.6122770202085803
2007	3.5039306984644583
2008	-0.6462355895876755
2009	-4.499804406740012
2010	3.372482283683837
2011	1.6834246726746187
2012	-0.05629615023850931
2013	0.6227718922440886
2014	2.0331252900417383
2015	2.016841508273018
2016	1.8498377572517342
2017	2.6995188686476723
2018	1.9821429093133105
2019	1.534912001415222
2020	-6.32121357434886
2021	5.0160489664284285