  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $40.47 |   | $38.35 | 
  | $2.12 | 
| 2015 | $39.44 | +2.6% | $37.38 | 
+2.6% | $2.07 | 
| 2014 | $38.70 | +1.9% | $36.68 | 
+1.9% | $2.03 | 
| 2013 | $37.96 | +1.9% | $35.98 | 
+1.9% | $1.99 | 
| 2012 | $37.23 | +2.0% | $35.28 | 
+2.0% | $1.95 | 
| 2011 | $36.65 | +1.6% | $34.73 | 
+1.6% | $1.92 | 
| 2010 | $36.01 | +1.8% | $34.12 | 
+1.8% | $1.89 | 
| 2009 | $35.62 | +1.1% | $33.75 | 
+1.1% | $1.87 | 
| 2008 | $34.56 | +3.1% | $32.75 | 
+3.1% | $1.81 | 
| 2007 | $33.40 | +3.5% | $31.65 | 
+3.5% | $1.75 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $40.47 |   | $20.85 | 
  | $19.62 | 
| 2015 | $39.44 | +2.6% | $20.27 | 
+2.9% | $19.18 | 
| 2014 | $38.70 | +1.9% | $19.83 | 
+2.2% | $18.87 | 
| 2013 | $37.96 | +1.9% | $19.43 | 
+2.1% | $18.53 | 
| 2012 | $37.23 | +2.0% | $19.10 | 
+1.7% | $18.13 | 
| 2011 | $36.65 | +1.6% | $18.80 | 
+1.6% | $17.85 | 
| 2010 | $36.01 | +1.8% | $18.48 | 
+1.7% | $17.52 | 
| 2009 | $35.62 | +1.1% | $18.23 | 
+1.4% | $17.39 | 
| 2008 | $34.56 | +3.1% | $17.77 | 
+2.6% | $16.79 | 
| 2007 | $33.40 | +3.5% | $17.20 | 
+3.3% | $16.20 | 
  | 
| Reference Date: 1st Quarter 2016 |