Year Index 1992 2925.59 1993 300018.31 1994 1503447.33 1995 4234469.61 1996 5916546.99 1997 6515141.08 1998 7817698.86 1999 9319855.59 2000 11725868.83 2001 12443714.56 2002 12372958.84 2003 13392822.86 2004 15041301.19 2005 16597564.80 2006 18526993.01 2007 21600530.77 2008 26419749.87 2009 29671978.51 2010 32370877.33 2011 33847065.64 2012 33778526.73 2013 33946126.39 2014 42388383.41 2015 60748059.08 2016 68257399.30 2017 77587328.49 2018 85173122.12 2019 91107056.05 2020 96229542.87 2021 101397476.76 2022 106587918.75 2023 111910231.37 2024 117498305.92