  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $17.82 |   | $19.44 | 
  | -$1.61 | 
| 2015 | $17.18 | +3.8% | $18.74 | 
+3.8% | -$1.56 | 
| 2014 | $16.84 | +2.0% | $18.37 | 
+2.0% | -$1.53 | 
| 2013 | $16.50 | +2.0% | $18.00 | 
+2.0% | -$1.50 | 
| 2012 | $16.22 | +1.7% | $17.70 | 
+1.7% | -$1.47 | 
| 2011 | $15.93 | +1.8% | $17.38 | 
+1.8% | -$1.44 | 
| 2010 | $15.67 | +1.6% | $17.10 | 
+1.6% | -$1.42 | 
| 2009 | $15.38 | +1.9% | $16.78 | 
+1.9% | -$1.39 | 
| 2008 | $14.96 | +2.8% | $16.32 | 
+2.8% | -$1.35 | 
| 2007 | $14.48 | +3.3% | $15.80 | 
+3.3% | -$1.31 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $17.82 |   | $20.85 | 
  | -$3.03 | 
| 2015 | $17.18 | +3.8% | $20.27 | 
+2.9% | -$3.09 | 
| 2014 | $16.84 | +2.0% | $19.83 | 
+2.2% | -$2.99 | 
| 2013 | $16.50 | +2.0% | $19.43 | 
+2.1% | -$2.93 | 
| 2012 | $16.22 | +1.7% | $19.10 | 
+1.7% | -$2.87 | 
| 2011 | $15.93 | +1.8% | $18.80 | 
+1.6% | -$2.87 | 
| 2010 | $15.67 | +1.6% | $18.48 | 
+1.7% | -$2.80 | 
| 2009 | $15.38 | +1.9% | $18.23 | 
+1.4% | -$2.85 | 
| 2008 | $14.96 | +2.8% | $17.77 | 
+2.6% | -$2.80 | 
| 2007 | $14.48 | +3.3% | $17.20 | 
+3.3% | -$2.71 | 
  | 
| Reference Date: 1st Quarter 2016 |