Year	annual % growth
1972	2.9063766486290916
1973	4.80945508564578
1974	-4.1487453270977
1975	3.449034558491391
1976	7.158098211997128
1977	12.871465651142117
1978	0.41197627236853407
1979	-1.6641602719398207
1980	-3.6762186967072523
1981	-16.959688043894175
1982	-10.446664206078864
1983	7.81216737616009
1984	8.959197988962941
1985	0.8139820850118156
1986	9.558773809055694
1987	-4.444248215004578
1988	-0.3612104752437375
1989	0.07681189766736907
1990	2.5383882491346412
1991	0.12625526147616029
1992	7.919361863161157
1993	5.273297903998625
1994	4.9317108594724175
1995	1.441967223510261
1996	-2.0311497156587563
1997	5.02005486341352
1998	4.842635142018352
1999	-2.3635224389684737
2000	0.020384041386861895
2001	1.7471353012727349
2002	0.721460161521918
2003	2.2367207153576345
2004	2.1118132468069746
2005	1.4420591133567768
2006	6.274788344632725
2007	6.53076032302657
2008	2.7113932380871546
2009	-1.6742015157496581
2010	5.975608966328608
2011	2.3111296399667793
2012	4.9429944864153725
2013	1.2719452652936383
2014	2.4982668734632654
2015	4.740578184400192
2016	4.2337662875380175
2017	1.225230852790176
2018	0.8164224430096994
2019	1.8149191030766332
2020	-5.419690040683008
2021	3.786384059989274