Year	Index (Units)
1980	6.189
1981	7.702
1982	9.330
1983	11.212
1984	13.282
1985	15.847
1986	19.494
1987	22.691
1988	25.758
1989	29.288
1990	35.272
1991	42.135
1992	48.825
1993	55.861
1994	61.935
1995	67.378
1996	72.682
1997	76.637
1998	80.099
1999	81.814
2000	84.184
2001	87.249
2002	90.671
2003	93.799
2004	96.631
2005	100.000
2006	103.314
2007	106.402
2008	110.903
2009	112.397
2010	117.684
2011	121.354
2012	122.609
2013	121.562
2014	119.868
2015	118.557
2016	118.573
2017	119.922
2018	120.851
2019	121.476
2020	119.943
2021	120.632
2022	131.850
2023	137.328
2024	141.103
2025	144.060
2026	146.931
2027	149.723
2028	152.559
2029	155.449