Year	Index (Units)
1980	22.636
1981	37.418
1982	49.393
1983	66.882
1984	50.554
1985	73.211
1986	55.662
1987	38.709
1988	35.021
1989	43.845
1990	43.497
1991	59.316
1992	57.812
1993	47.251
1994	50.332
1995	92.922
1996	87.565
1997	89.520
1998	98.776
1999	86.506
2000	66.668
2001	69.176
2002	71.511
2003	71.103
2004	67.206
2005	69.299
2006	66.358
2007	70.333
2008	79.310
2009	76.276
2010	80.254
2011	87.038
2012	87.014
2013	86.203
2014	87.321
2015	100.000
2016	102.841
2017	113.532
2018	110.658
2019	106.838
2020	105.770
2021	108.625
2022	116.555
2023	124.947
2024	128.820
2025	132.427
2026	136.135
2027	139.947
2028	143.866
2029	146.743