  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $15.78 |   | $12.61 | 
  | $3.17 | 
| 2015 | $15.36 | +2.7% | $12.27 | 
+2.7% | $3.09 | 
| 2014 | $15.05 | +2.0% | $12.03 | 
+2.0% | $3.02 | 
| 2013 | $14.86 | +1.3% | $11.88 | 
+1.3% | $2.99 | 
| 2012 | $14.65 | +1.5% | $11.70 | 
+1.5% | $2.94 | 
| 2011 | $14.44 | +1.4% | $11.54 | 
+1.4% | $2.90 | 
| 2010 | $14.29 | +1.1% | $11.42 | 
+1.1% | $2.87 | 
| 2009 | $14.01 | +2.0% | $11.20 | 
+2.0% | $2.81 | 
| 2008 | $13.63 | +2.8% | $10.89 | 
+2.8% | $2.74 | 
| 2007 | $13.09 | +4.1% | $10.46 | 
+4.1% | $2.63 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $15.78 |   | $20.85 | 
  | -$5.07 | 
| 2015 | $15.36 | +2.7% | $20.27 | 
+2.9% | -$4.90 | 
| 2014 | $15.05 | +2.0% | $19.83 | 
+2.2% | -$4.77 | 
| 2013 | $14.86 | +1.3% | $19.43 | 
+2.1% | -$4.56 | 
| 2012 | $14.65 | +1.5% | $19.10 | 
+1.7% | -$4.45 | 
| 2011 | $14.44 | +1.4% | $18.80 | 
+1.6% | -$4.35 | 
| 2010 | $14.29 | +1.1% | $18.48 | 
+1.7% | -$4.19 | 
| 2009 | $14.01 | +2.0% | $18.23 | 
+1.4% | -$4.22 | 
| 2008 | $13.63 | +2.8% | $17.77 | 
+2.6% | -$4.13 | 
| 2007 | $13.09 | +4.1% | $17.20 | 
+3.3% | -$4.10 | 
  | 
| Reference Date: 1st Quarter 2016 |