Year constant 2021 international $ 1990 11297.324283037296 1991 10715.847684867384 1992 10793.85062543403 1993 10433.936512046344 1994 10069.738134443089 1995 10168.715974732533 1996 10389.715614579729 1997 10406.581669590585 1998 10820.014208724306 1999 10962.557057875538 2000 11116.297969194517 2001 11523.30013560972 2002 11895.04669080788 2003 12508.35875066004 2004 12811.308693170377 2005 13215.842415717005 2006 13470.014042337521 2007 14026.57176647176 2008 14208.6061745014 2009 14125.039750797983 2010 14631.284542036074 2011 14667.530756622018 2012 14699.572413496162 2013 14678.749975739114 2014 14946.76066148654 2015 15117.00012697778 2016 15618.630361134063 2017 15465.521400223144 2018 15227.341732868186 2019 15105.290677431072 2020 14166.821596702635 2021 14403.61276838739 2022 14581.902883635965 2023 15114.171749243895