  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $23.25 |   | $27.20 | 
  | -$3.95 | 
| 2015 | $22.63 | +2.7% | $26.48 | 
+2.7% | -$3.84 | 
| 2014 | $22.18 | +2.0% | $25.95 | 
+2.0% | -$3.76 | 
| 2013 | $21.90 | +1.3% | $25.62 | 
+1.3% | -$3.72 | 
| 2012 | $21.58 | +1.5% | $25.25 | 
+1.5% | -$3.66 | 
| 2011 | $21.28 | +1.4% | $24.90 | 
+1.4% | -$3.61 | 
| 2010 | $21.06 | +1.1% | $24.63 | 
+1.1% | -$3.57 | 
| 2009 | $20.64 | +2.0% | $24.15 | 
+2.0% | -$3.50 | 
| 2008 | $20.08 | +2.8% | $23.49 | 
+2.8% | -$3.41 | 
| 2007 | $19.29 | +4.1% | $22.57 | 
+4.1% | -$3.27 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $23.25 |   | $20.85 | 
  | $2.40 | 
| 2015 | $22.63 | +2.7% | $20.27 | 
+2.9% | $2.36 | 
| 2014 | $22.18 | +2.0% | $19.83 | 
+2.2% | $2.35 | 
| 2013 | $21.90 | +1.3% | $19.43 | 
+2.1% | $2.47 | 
| 2012 | $21.58 | +1.5% | $19.10 | 
+1.7% | $2.48 | 
| 2011 | $21.28 | +1.4% | $18.80 | 
+1.6% | $2.48 | 
| 2010 | $21.06 | +1.1% | $18.48 | 
+1.7% | $2.57 | 
| 2009 | $20.64 | +2.0% | $18.23 | 
+1.4% | $2.41 | 
| 2008 | $20.08 | +2.8% | $17.77 | 
+2.6% | $2.31 | 
| 2007 | $19.29 | +4.1% | $17.20 | 
+3.3% | $2.09 | 
  | 
| Reference Date: 1st Quarter 2016 |