Year constant 2021 PPP $ 1991 55840.24229804289 1992 57621.98588848227 1993 55571.19458341319 1994 54106.49480252693 1995 57589.43085553909 1996 54951.36539961395 1997 51687.759271562194 1998 53788.00398730008 1999 55353.96372506422 2000 56987.76917482664 2001 55343.11439804991 2002 55945.23065408283 2003 56666.37666731153 2004 53775.02031909025 2005 54148.47527346322 2006 52951.802771763636 2007 54650.233466454636 2008 53634.526625595994 2009 52813.630212803495 2010 53796.31562662396 2011 54231.21097020733 2012 55038.02446464167 2013 53386.267278927706 2014 58362.932747918596 2015 58671.08293411508 2016 59215.43007343603 2017 60568.307310517004 2018 60730.42471353733 2019 60494.51385899414 2020 61217.57061855807 2021 61653.70275625269 2022 58999.73913477256 2023 59416.25306442042