Year	2015 = 100
1980	22.4998124934
1981	24.1355605315
1982	25.7713085733
1983	27.4070566114
1984	29.0428046533
1985	27.6641187654
1986	25.2516850083
1987	30.5629560905
1988	28.723511125
1989	33.4203245347
1990	37.6642910695
1991	36.2096352984
1992	31.877240558
1993	36.8775714528
1994	36.8775714528
1995	39.4049237894
1996	39.8190382633
1997	38.4281346453
1998	38.9074474586
1999	35.6904247308
2000	37.3915728658
2001	41.040900563
2002	39.8057435026
2003	34.1913932056
2004	41.7836790727
2005	47.873003392
2006	57.9962383921
2007	67.5406338588
2008	75.3451421936
2009	58.934957755
2010	82.5966370179
2011	80.4379193252
2012	108.2216545547
2013	105.9012435861
2014	116.0115655934
2015	100
2016	135.5304157769
2017	257.9266204808
2018	223.3427841867
2019	221.5063302144
2020	501.4288522131
2021	585.7451649091