Year	Index (Units)
1980	44.138
1981	50.609
1982	57.311
1983	65.654
1984	67.364
1985	74.408
1986	76.202
1987	70.878
1988	68.090
1989	68.529
1990	68.390
1991	66.442
1992	65.939
1993	64.021
1994	79.738
1995	95.048
1996	98.700
1997	100.302
1998	98.271
1999	96.745
2000	100.000
2001	104.083
2002	106.441
2003	111.109
2004	108.228
2005	111.343
2006	119.013
2007	120.045
2008	131.148
2009	135.844
2010	137.863
2011	139.510
2012	147.725
2013	153.591
2014	180.892
2015	183.430
2016	192.503
2017	200.550
2018	203.783
2019	209.391
2020	211.235
2021	220.232
2022	232.520
2023	239.881
2024	251.168
2025	262.628
2026	272.656
2027	281.456
2028	289.899
2029	298.596