Year	Index (Units)
1988	0.005
1989	0.342
1990	10.630
1991	23.025
1992	28.067
1993	31.856
1994	33.035
1995	36.708
1996	40.985
1997	44.751
1998	50.589
1999	56.262
2000	62.758
2001	67.375
2002	69.902
2003	73.609
2004	79.843
2005	87.508
2006	95.506
2007	106.133
2008	127.175
2009	131.864
2010	139.057
2011	150.296
2012	161.108
2013	172.604
2014	183.022
2015	190.338
2016	197.045
2017	204.632
2018	214.756
2019	226.302
2020	234.634
2021	246.197
2022	271.973
2023	294.934
2024	309.681
2025	322.068
2026	334.951
2027	348.349
2028	362.283
2029	376.774