Year	Index (Units)
1988	0.001
1989	0.029
1990	2.216
1991	11.290
1992	19.592
1993	29.109
1994	36.018
1995	40.027
1996	44.650
1997	48.466
1998	51.982
1999	53.786
2000	55.807
2001	56.910
2002	57.019
2003	58.308
2004	60.443
2005	61.421
2006	62.650
2007	63.764
2008	67.455
2009	69.435
2010	70.497
2011	72.872
2012	75.536
2013	77.656
2014	80.176
2015	83.021
2016	86.004
2017	88.416
2018	89.580
2019	91.493
2020	93.165
2021	96.872
2022	104.496
2023	111.047
2024	113.632
2025	115.915
2026	118.254
2027	120.640
2028	123.074
2029	125.535