Year	annual % growth
1971	3.651345094829537
1972	4.965294840541176
1973	5.586525756136737
1974	0.47696641292237985
1975	-0.9033197243127944
1976	4.7297190596897565
1977	2.8708432734229348
1978	3.9861851794631207
1979	3.2780451013767475
1980	-0.08281866101842184
1981	-1.3452056586282737
1982	0.7515759249810685
1983	1.7442844897169039
1984	2.386981719663467
1985	2.5533584481811857
1986	5.335162609257409
1987	3.1433785383547814
1988	4.625252178773451
1989	3.724676950043616
1990	3.687022079674776
1991	2.182493826150406
1992	1.5344638091623324
1993	-0.8285332382786521
1994	2.343356129852637
1995	2.7297855753198235
1996	1.8564626940909221
1997	2.7341376719336665
1998	3.3837602576926713
1999	3.0451721455930993
2000	2.486544063214737
2001	1.9612376625102144
2002	0.7618436298543685
2003	0.8080218097833267
2004	2.636899110565281
2005	1.2939642126797537
2006	3.07788063950926
2007	2.831521805615637
2008	-1.228059432529605
2009	-3.811882082726953
2010	1.7612915748359796
2011	0.9970440576361028
2012	-1.277986812831827
2013	0.16239905172206193
2014	1.770116461389918
2015	2.4584353771548706
2016	2.7266640138620772
2017	2.336241243765926
2018	1.7175153631609987
2019	1.2998330205949031
2020	-7.672943788877802
2021	5.535288334566928