Year	annual % growth
1971	2.9273022355849463
1972	4.128184183278577
1973	4.866638802713695
1974	-0.30187022537513997
1975	-1.1911678814960283
1976	4.046479899459271
1977	2.0874873883031313
1978	3.3671515596822843
1979	2.759844005770205
1980	-0.5850830913060605
1981	-1.7427303120538795
1982	0.39780803404848086
1983	1.481896318042672
1984	2.2997100293173673
1985	2.314300576996601
1986	5.100618135775761
1987	2.7841638613285085
1988	4.046321531497938
1989	3.206344912090799
1990	3.1344872275675755
1991	1.5957573435229904
1992	1.0643240663414417
1993	-1.22115181370647
1994	2.3922945649678127
1995	2.6351490168967615
1996	1.7675822581040705
1997	2.5027145646504607
1998	3.3264978721691705
1999	2.8535984862048593
2000	2.4443496846441946
2001	1.8352978400663744
2002	0.6964753281135501
2003	0.689304155073998
2004	2.4528716340842465
2005	1.3352491593357172
2006	3.033366627500783
2007	2.6966452269457193
2008	-1.0461728315254533
2009	-3.9673774013123904
2010	1.7253368986851427
2011	1.3212848927057053
2012	-1.1855962253445966
2013	0.10656667468120418
2014	1.777197976613948
2015	2.49052746443364
2016	2.5036730962630287
2017	2.4681406577284406
2018	1.7863101695049863
2019	1.5958939529382832
2020	-6.8946523370313315
2021	5.5759534622184646