  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $18.53 |   | $12.36 | 
  | $6.17 | 
| 2015 | $18.04 | +2.7% | $12.03 | 
+2.7% | $6.01 | 
| 2014 | $17.68 | +2.0% | $11.79 | 
+2.0% | $5.89 | 
| 2013 | $17.45 | +1.3% | $11.64 | 
+1.3% | $5.81 | 
| 2012 | $17.20 | +1.5% | $11.47 | 
+1.5% | $5.73 | 
| 2011 | $16.96 | +1.4% | $11.31 | 
+1.4% | $5.65 | 
| 2010 | $16.78 | +1.1% | $11.19 | 
+1.1% | $5.59 | 
| 2009 | $16.45 | +2.0% | $10.97 | 
+2.0% | $5.48 | 
| 2008 | $16.00 | +2.8% | $10.68 | 
+2.8% | $5.33 | 
| 2007 | $15.38 | +4.1% | $10.26 | 
+4.1% | $5.12 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $18.53 |   | $19.32 | 
  | -$0.78 | 
| 2015 | $18.04 | +2.7% | $18.78 | 
+2.9% | -$0.74 | 
| 2014 | $17.68 | +2.0% | $18.38 | 
+2.2% | -$0.69 | 
| 2013 | $17.45 | +1.3% | $18.01 | 
+2.1% | -$0.55 | 
| 2012 | $17.20 | +1.5% | $17.70 | 
+1.7% | -$0.49 | 
| 2011 | $16.96 | +1.4% | $17.42 | 
+1.6% | -$0.45 | 
| 2010 | $16.78 | +1.1% | $17.13 | 
+1.7% | -$0.34 | 
| 2009 | $16.45 | +2.0% | $16.90 | 
+1.4% | -$0.44 | 
| 2008 | $16.00 | +2.8% | $16.46 | 
+2.6% | -$0.45 | 
| 2007 | $15.38 | +4.1% | $15.94 | 
+3.3% | -$0.56 | 
  | 
| Reference Date: 1st Quarter 2016 |