Year Index (Units) 1999 14.494 2000 15.218 2001 17.706 2002 21.129 2003 28.685 2004 37.772 2005 49.714 2006 81.942 2007 85.770 2008 91.561 2009 87.520 2010 90.419 2011 95.862 2012 99.326 2013 102.437 2014 104.063 2015 106.466 2016 105.753 2017 106.568 2018 106.466 2019 106.568 2020 109.930 2021 115.737 2022 120.730 2023 125.518 2024 130.539 2025 135.760 2026 140.919 2027 146.133 2028 151.394 2029 156.693