Year	2015 = 100
1980	20.3562187538
1981	21.7905427193
1982	20.7321504463
1983	20.0477619904
1984	19.8337701102
1985	18.9720190163
1986	17.7902440309
1987	13.575953448
1988	14.8252033537
1989	18.2567848912
1990	18.8544198768
1991	20.8015532154
1992	22.0951437674
1993	22.2647949925
1994	22.9723177047
1995	19.5350276499
1996	17.581524892
1997	16.8046813505
1998	18.1811148464
1999	17.7207844942
2000	17.7381919452
2001	19.2255618673
2002	23.1505551017
2003	23.9456887484
2004	35.1410003388
2005	39.3737186184
2006	41.4993617239
2007	53.4428068542
2008	76.3587482036
2009	76.0009283936
2010	78.2813043904
2011	91.3833120598
2012	97.4391706299
2013	106.4330199982
2014	113.3031604158
2015	100
2016	91.0777145866
2017	89.0855285997
2018	89.6100924517
2019	81.1073459471
2020	66.5196704237
2021	69.629801559