Year	2000 = 100
1980	20.92674489
1981	17.48268502
1982	19.4745053
1983	14.47510174
1984	17.66232351
1985	16.644413
1986	11.27980265
1987	21.07141827
1988	20.63688343
1989	19.90900468
1990	17.13922484
1991	22.08660772
1992	17.57214331
1993	19.18532037
1994	44.35662971
1995	43.05355956
1996	42.099488
1997	61.28755303
1998	66.81095651
1999	75.91625752
2000	100
2001	92.40259157
2002	98.24055046
2003	76.90485116
2004	74.3549401
2005	69.69710569
2006	82.84385649
2007	85.32497463
2008	69.26234917
2009	59.33947892
2010	61.07614122
2011	73.73454923
2012	83.55458417
2013	47.31607814
2014	38.51710518
2015	37.76963356
2016	51.48948981
2017	60.46991598
2018	75.2181026