  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $22.40 |   | $27.20 | 
  | -$4.80 | 
| 2015 | $21.80 | +2.7% | $26.48 | 
+2.7% | -$4.67 | 
| 2014 | $21.37 | +2.0% | $25.95 | 
+2.0% | -$4.57 | 
| 2013 | $21.10 | +1.3% | $25.62 | 
+1.3% | -$4.52 | 
| 2012 | $20.79 | +1.5% | $25.25 | 
+1.5% | -$4.45 | 
| 2011 | $20.50 | +1.4% | $24.90 | 
+1.4% | -$4.39 | 
| 2010 | $20.29 | +1.1% | $24.63 | 
+1.1% | -$4.34 | 
| 2009 | $19.89 | +2.0% | $24.15 | 
+2.0% | -$4.26 | 
| 2008 | $19.35 | +2.8% | $23.49 | 
+2.8% | -$4.14 | 
| 2007 | $18.59 | +4.1% | $22.57 | 
+4.1% | -$3.98 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $22.40 |   | $20.85 | 
  | $1.55 | 
| 2015 | $21.80 | +2.7% | $20.27 | 
+2.9% | $1.54 | 
| 2014 | $21.37 | +2.0% | $19.83 | 
+2.2% | $1.54 | 
| 2013 | $21.10 | +1.3% | $19.43 | 
+2.1% | $1.67 | 
| 2012 | $20.79 | +1.5% | $19.10 | 
+1.7% | $1.69 | 
| 2011 | $20.50 | +1.4% | $18.80 | 
+1.6% | $1.70 | 
| 2010 | $20.29 | +1.1% | $18.48 | 
+1.7% | $1.80 | 
| 2009 | $19.89 | +2.0% | $18.23 | 
+1.4% | $1.66 | 
| 2008 | $19.35 | +2.8% | $17.77 | 
+2.6% | $1.58 | 
| 2007 | $18.59 | +4.1% | $17.20 | 
+3.3% | $1.39 | 
  | 
| Reference Date: 1st Quarter 2016 |