Year	Index (Units)
1980	5.508
1981	6.325
1982	7.065
1983	7.992
1984	8.927
1985	10.920
1986	14.408
1987	17.988
1988	21.545
1989	25.348
1990	32.520
1991	37.206
1992	41.381
1993	49.038
1994	54.228
1995	59.668
1996	65.509
1997	68.451
1998	70.196
1999	70.556
2000	72.160
2001	74.863
2002	76.262
2003	77.879
2004	81.347
2005	85.162
2006	88.598
2007	92.656
2008	99.381
2009	99.915
2010	101.093
2011	106.278
2012	108.117
2013	108.936
2014	110.179
2015	109.373
2016	110.034
2017	111.150
2018	112.359
2019	112.443
2020	112.027
2021	115.912
2022	124.253
2023	129.281
2024	130.439
2025	132.657
2026	134.979
2027	137.409
2028	139.882
2029	142.400