Year	annual %
1971	4.458444375608977
1972	5.897933680642595
1973	13.017697034709315
1974	17.17032969810947
1975	-0.07686394473303437
1976	0.04162244743524468
1977	0.010759404529721905
1978	-15.878062947844043
1979	6.006183910220344
1980	12.517177763060644
1981	3.462555265699635
1982	7.287149229857334
1983	7.1583594103681065
1984	10.163689022414246
1985	6.508614700434308
1986	7.185437902255501
1987	1.1011726853261194
1988	14.964871821294807
1989	5.607915377981868
1990	6.205353073071308
1991	8.941284317888872
1992	8.923289538917317
1993	8.5134507279827
1994	12.341255100385524
1995	8.284382710938829
1996	8.11263265655306
1997	12.90687481248473
1998	10.696267217080361
1999	6.170258995883259
2000	16.527146668362718
2001	5.33733054010726
2002	5.165193015842021
2003	3.624306235986623
2004	4.345881628206328
2005	6.479202402556524
2006	6.57512374147187
2007	4.688177919465957
2008	5.60618091108023
2009	4.424099417445817
2010	6.081891397222151
2011	9.158561976683018
2012	9.020082808234235
2013	6.390927605819115
2014	5.940536822618768
2015	3.3162073959517073
2016	4.151403960402163
2017	4.458162528379688
2018	1.1508586850933966
2019	3.108002214335272
2020	5.28736805563814
2021	7.628020096333628
2022	5.794860051513922