Year	Index (Units)
1980	0.067
1981	0.095
1982	0.110
1983	0.136
1984	0.224
1985	0.477
1986	0.604
1987	1.128
1988	1.809
1989	3.270
1990	4.349
1991	6.854
1992	11.615
1993	17.216
1994	19.829
1995	28.778
1996	43.435
1997	64.746
1998	69.972
1999	68.508
2000	74.407
2001	76.826
2002	79.363
2003	76.606
2004	77.234
2005	79.828
2006	81.387
2007	85.153
2008	94.048
2009	92.508
2010	93.499
2011	98.225
2012	100.249
2013	101.031
2014	99.988
2015	101.470
2016	104.217
2017	104.023
2018	104.420
2019	104.718
2020	106.251
2021	109.729
2022	118.417
2023	126.900
2024	130.707
2025	133.321
2026	135.988
2027	138.707
2028	141.481
2029	144.311