Year	2015 = 100
1981	4.3356375266
1982	5.7808236086
1983	4.6317054429
1984	4.052493971
1985	4.3797397388
1986	4.3567696711
1987	4.5321046965
1988	4.1740773742
1989	4.3882574971
1990	4.7659964845
1991	4.6046723522
1992	4.7821704824
1993	5.4431752894
1994	5.619719554
1995	5.5727308578
1996	5.5345637119
1997	6.467931613
1998	7.1579633966
1999	7.6180301
2000	7.9496945807
2001	8.4417560153
2002	7.8394178461
2003	8.171890476
2004	8.6632123505
2005	62.8350616662
2006	70.2004943977
2007	74.1099365855
2008	78.5510549749
2009	87.5032674934
2010	87.0943410074
2011	107.8323939753
2012	121.9616974637
2013	116.0025071938
2014	99.130873247
2015	100
2016	107.3474567231
2017	98.6707333181
2018	94.7305203031
2019	99.3540406506
2020	80.8151977898
2021	104.8278788532