Year	annual %
1966	7.161137739718853
1967	5.436848851286953
1968	3.2366923840662736
1969	3.485418815906584
1970	2.9772950928131507
1971	3.858257513493129
1972	6.117533687166741
1973	4.86167350408661
1974	5.336001106765423
1975	2.9235318885202872
1976	5.049260173759464
1977	6.7800617282486115
1978	5.322765834727889
1979	-4.180265433269042
1980	-15.83686429486589
1981	-5.720990451529374
1982	-6.308471375847574
1983	1.5390252839868168
1984	1.3352580295921967
1985	0.6143162393162527
1986	0.1946730377842698
1987	2.508169213106058
1988	1.878176962178003
1989	0.9640591966173275
1990	4.832900577937863
1991	1.4940875679130698
1992	7.021963315752174
1993	5.818315557190147
1994	4.692061726678702
1995	4.7340814022973206
1996	0.8114618993280089
1997	3.1379700666582835
1998	2.652277300164613
1999	2.1620337372297342
2000	1.1279069767441854
2001	0.8796136598827218
2002	1.5729184475978855
2003	1.5653930314761766
2004	0.8894044856921965
2005	2.68083009363194
2006	4.336998602860405
2007	1.8476022058785873
2008	2.1544029828276763
2009	-2.108768376275222
2010	2.1541953669363494
2011	3.7735849983468626
2012	2.8877001018869066
2013	2.18295232499635
2014	1.7293998423458987
2015	2.4000000885211534
2016	2.5390624113586426
2017	2.2476190813413837
2018	2.412444223779204
2019	2.437471590657836
2020	-7.8931013598670035
2021	11.904761701595675
2022	2.799552169438684
2023	3.510977066089822