Year Index (Units) 1990 15.808 1991 19.301 1992 21.642 1993 23.977 1994 27.020 1995 29.342 1996 32.049 1997 34.414 1998 37.678 1999 40.905 2000 45.850 2001 49.997 2002 57.123 2003 58.595 2004 61.075 2005 63.265 2006 67.082 2007 70.787 2008 78.690 2009 84.927 2010 87.526 2011 94.000 2012 100.000 2013 104.894 2014 109.754 2015 113.811 2016 122.117 2017 128.427 2018 135.040 2019 138.535 2020 141.806 2021 148.179 2022 158.410 2023 167.158 2024 176.390 2025 186.131 2026 196.410 2027 207.257 2028 218.703 2029 230.782