  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $17.53 |   | $19.17 | 
  | -$1.64 | 
| 2015 | $16.97 | +3.3% | $18.56 | 
+3.3% | -$1.58 | 
| 2014 | $16.59 | +2.3% | $18.14 | 
+2.3% | -$1.55 | 
| 2013 | $16.28 | +1.9% | $17.80 | 
+1.9% | -$1.52 | 
| 2012 | $16.01 | +1.7% | $17.50 | 
+1.7% | -$1.49 | 
| 2011 | $15.75 | +1.6% | $17.22 | 
+1.6% | -$1.47 | 
| 2010 | $15.58 | +1.1% | $17.03 | 
+1.1% | -$1.45 | 
| 2009 | $15.31 | +1.8% | $16.74 | 
+1.8% | -$1.43 | 
| 2008 | $14.91 | +2.7% | $16.30 | 
+2.7% | -$1.39 | 
| 2007 | $14.57 | +2.3% | $15.93 | 
+2.3% | -$1.36 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $17.53 |   | $23.35 | 
  | -$5.82 | 
| 2015 | $16.97 | +3.3% | $22.70 | 
+2.9% | -$5.72 | 
| 2014 | $16.59 | +2.3% | $22.21 | 
+2.2% | -$5.62 | 
| 2013 | $16.28 | +1.9% | $21.76 | 
+2.1% | -$5.48 | 
| 2012 | $16.01 | +1.7% | $21.39 | 
+1.7% | -$5.38 | 
| 2011 | $15.75 | +1.6% | $21.05 | 
+1.6% | -$5.30 | 
| 2010 | $15.58 | +1.1% | $20.70 | 
+1.7% | -$5.12 | 
| 2009 | $15.31 | +1.8% | $20.42 | 
+1.4% | -$5.11 | 
| 2008 | $14.91 | +2.7% | $19.90 | 
+2.6% | -$4.98 | 
| 2007 | $14.57 | +2.3% | $19.26 | 
+3.3% | -$4.69 | 
  | 
| Reference Date: 1st Quarter 2016 |