Year	2015 = 100
1987	24.1928624661
1988	15.7803349725
1989	15.1783898873
1990	20.0234764126
1991	22.2350568918
1992	20.8396397915
1993	20.4630252283
1994	20.3641699954
1995	23.3470018922
1996	18.0802549486
1997	12.1383008698
1998	16.0396487877
1999	19.7087885619
2000	21.0290157729
2001	24.2971702116
2002	23.555614313
2003	28.136896916
2004	32.707306214
2005	36.0147671216
2006	43.6233205098
2007	50.2874272583
2008	62.8884865991
2009	58.6107230779
2010	66.4454273383
2011	77.7306573799
2012	82.196599932
2013	89.7636600859
2014	90.3883313104
2015	100
2016	90.3002532545
2017	76.2543365668
2018	78.6751953906
2019	84.0761239015
2020	75.5238036157
2021	76.6025752595