Year	2015 = 100
1981	2.8915553509
1982	3.3046195801
1983	2.8242387655
1984	2.432447247
1985	2.9626964425
1986	3.0716860397
1987	3.1521240289
1988	2.7042691357
1989	2.801221234
1990	2.9969407482
1991	3.1587243853
1992	4.4195422723
1993	4.8748434957
1994	5.1400385913
1995	5.5090064472
1996	5.4900161025
1997	6.3692558405
1998	6.9097624657
1999	7.2446534482
2000	7.5740984752
2001	8.0279368653
2002	7.4551422514
2003	7.6158772327
2004	8.3159996896
2005	62.1261854274
2006	70.7967626137
2007	77.7290667644
2008	86.5062630656
2009	94.4378558835
2010	96.8164163767
2011	128.2603117213
2012	142.8902265193
2013	129.2489023683
2014	114.2060555985
2015	100
2016	98.6522495419
2017	97.7513493077
2018	101.1679193954
2019	99.7393167994
2020	83.5624159434
2021	115.9787579712