Year	2015 = 100
1985	20.1170963941
1986	12.7822201747
1987	20.6281249584
1988	21.4465427071
1989	22.4336921497
1990	26.0881579205
1991	19.7901443993
1992	43.98090365
1993	27.5444499344
1994	34.615110075
1995	31.8399750843
1996	31.1799206845
1997	39.9651097867
1998	45.3795399272
1999	45.080666301
2000	43.6267981483
2001	40.9512104279
2002	51.4984732599
2003	50.9454630205
2004	57.121294467
2005	73.4191290791
2006	81.6750389699
2007	100.0039439498
2008	109.7320498729
2009	106.6913392614
2010	105.602582081
2011	99.639194731
2012	103.9912608875
2013	103.2338666461
2014	95.4514573733
2015	100
2016	98.8444620145
2017	96.6490606665
2018	87.2491231102
2019	82.031132632
2020	77.0497522244
2021	76.2922702932