Table 2.
Year | Low | Not low |
---|---|---|
2003 | $1–35,999 | $36,000+ |
2004 | $1–35,999 | $36,000+ |
2005 | $1–36,999 | $37,000+ |
2006 | $1–37,999 | $38,000+ |
2007 | $1–38,999 | $39,000+ |
2008 | $1–38,999 | $39,000+ |
2009 | $1–39,999 | $40,000+ |
2010 | $1–40,999 | $41,000+ |
2011 | $1–38,999 | $39,000+ |
2012 | $1–38,999 | $39,000+ |
Adapted form: Ref. [14].