Year	2015 = 100
1981	6.8436831468
1982	6.9773937914
1983	6.2740464753
1984	6.3237269342
1985	6.1845061129
1986	5.4623619866
1987	5.8043483992
1988	3.3370781795
1989	4.3810788018
1990	6.8369287385
1991	7.5319219156
1992	8.9922074556
1993	9.722039167
1994	10.6830760887
1995	11.1567734855
1996	12.3530149413
1997	13.3399585791
1998	15.1009930882
1999	15.6231267062
2000	15.0138967525
2001	13.1710983438
2002	13.2510847707
2003	13.7134951944
2004	15.9715120341
2005	42.6594278279
2006	47.8804352189
2007	58.9630390756
2008	69.9281739638
2009	61.6630920097
2010	74.3745039192
2011	96.879551726
2012	101.4094586095
2013	106.7241123289
2014	108.4282675925
2015	100
2016	93.0271565423
2017	97.469647144
2018	102.2310569649
2019	95.5027942394
2020	65.4978635211
2021	91.5215409206