Year	Index (Units)
1988	6.570
1989	7.760
1990	10.351
1991	13.684
1992	16.640
1993	20.151
1994	24.424
1995	31.335
1996	37.526
1997	44.440
1998	49.023
1999	54.506
2000	60.001
2001	64.091
2002	67.179
2003	71.028
2004	74.900
2005	77.396
2006	82.444
2007	88.528
2008	91.627
2009	96.720
2010	101.240
2011	105.364
2012	110.609
2013	111.066
2014	110.033
2015	110.993
2016	112.954
2017	115.371
2018	118.529
2019	123.264
2020	126.642
2021	135.966
2022	169.345
2023	178.659
2024	186.441
2025	191.792
2026	197.498
2027	203.423
2028	209.526
2029	215.812