Year Index (Units) 1998 90.575 1999 97.932 2000 101.070 2001 120.589 2002 133.968 2003 140.716 2004 151.303 2005 161.895 2006 181.178 2007 202.301 2008 221.294 2009 242.777 2010 258.844 2011 288.479 2012 310.718 2013 337.111 2014 362.936 2015 392.113 2016 441.196 2017 502.496 2018 645.833 2019 776.619 2020 878.530 2021 926.486 2022 1011.587 2023 1112.896 2024 1173.338 2025 1238.646 2026 1300.648 2027 1364.514 2028 1430.721 2029 1499.629