Year	Index (Units)
1980	29.033
1981	32.456
1982	35.730
1983	37.630
1984	40.680
1985	43.041
1986	44.847
1987	46.605
1988	48.131
1989	50.426
1990	53.183
1991	55.251
1992	58.608
1993	61.623
1994	64.882
1995	67.431
1996	69.212
1997	70.761
1998	72.151
1999	73.812
2000	75.837
2001	78.613
2002	78.846
2003	83.094
2004	85.346
2005	87.069
2006	89.756
2007	93.470
2008	97.895
2009	98.153
2010	99.999
2011	101.617
2012	103.323
2013	102.354
2014	100.983
2015	100.222
2016	99.646
2017	100.680
2018	101.690
2019	103.035
2020	101.685
2021	104.417
2022	110.750
2023	115.795
2024	120.253
2025	123.311
2026	126.149
2027	129.016
2028	131.639
2029	134.276