Year	2015 = 100
1980	17.7774732886
1981	17.5665362294
1982	15.8281236272
1983	15.2669449463
1984	13.6698995953
1985	12.4250071547
1986	17.3567884234
1987	15.6485714656
1988	16.8187149967
1989	22.5806550652
1990	25.9504758109
1991	25.8241168499
1992	25.4396197335
1993	26.0629817725
1994	31.0841027731
1995	30.8436514408
1996	28.9930480057
1997	30.0130583034
1998	31.2415224939
1999	30.9907661603
2000	34.797394514
2001	38.4821618146
2002	38.5847837503
2003	44.1848365302
2004	47.4581715823
2005	54.8669904931
2006	64.2556930449
2007	64.9320207722
2008	75.9816507061
2009	68.2748469171
2010	76.3844635008
2011	79.5773979897
2012	95.8266489902
2013	101.1735705247
2014	108.2787089547
2015	100
2016	93.5004776163
2017	88.1998179304
2018	89.6092872303
2019	86.2917246897
2020	70.0748452183
2021	74.4283825653