Year National currency (Units) 1992 6686.161 1993 5957.390 1994 4802.140 1995 4357.961 1996 3990.063 1997 3483.437 1998 3666.679 1999 4219.664 2000 4946.178 2001 5888.872 2002 6745.688 2003 7817.553 2004 8872.886 2005 9922.282 2006 10887.201 2007 11950.051 2008 13546.986 2009 14200.463 2010 16204.116 2011 17939.344 2012 18887.802 2013 18218.083 2014 18531.295 2015 18592.360 2016 18183.578 2017 18262.335 2018 18283.867 2019 17346.503 2020 16729.536 2021 16432.661 2022 17066.855 2023 17172.399 2024 17347.983 2025 17530.857 2026 17727.335 2027 17932.525 2028 18146.345 2029 18369.367