Year Number Year Gross Income Price Index* 1 2004 $60,275 188.9 2 2005 $62,245 195.3 3 2006 $63,261 201.6 4 2007 $64,556 207.3 5 2008 $65,935 215.3 6 2009 $67,058 214.5 7 2010 $68,031 218.1 8 2011 $69,460 224.9 9 2012 $70,843 229.6 10 2013 $72,351 233.0 11 2014 $73,994 236.7 12 2015 $74,685 237.0 13 2016 $76,258 240.0 14 2017 $77,725 245.1 15 2018 $80,059 251.1 16 2019 $81,553 255.7 17 2020 $83,320 258.8 18 2021 $84,270 271.0