Dean Co-Operative Bank
Franklin, MA — Cooperative Bank
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Net Interest Margin Over Time
| Net Interest Margin | Dean Co-Operative Bank | All Insured Savings Banks in Massachusetts |
| 12-31-2016 | 3.585 | 3.143 |
| 09-30-2016 | 3.608 | 3.146 |
| 06-30-2016 | 3.63 | 3.156 |
| 03-31-2016 | 3.62 | 3.161 |
| 12-31-2015 | 3.591 | 3.16 |
| 09-30-2015 | 3.578 | 3.162 |
| 06-30-2015 | 3.55 | 3.15 |
| 03-31-2015 | 3.573 | 3.156 |
| 12-31-2014 | 3.644 | 3.152 |
| 09-30-2014 | 3.649 | 3.14 |
| 06-30-2014 | 3.659 | 3.137 |
| 03-31-2014 | 3.582 | 3.146 |
| 12-31-2013 | 3.481 | 3.175 |
| 09-30-2013 | 3.48 | 3.169 |
| 06-30-2013 | 3.505 | 3.157 |
| 03-31-2013 | 3.585 | 3.15 |
| 12-31-2012 | 3.762 | 3.239 |
| 09-30-2012 | 3.794 | 3.259 |
| 06-30-2012 | 3.875 | 3.271 |
| 03-31-2012 | 3.775 | 3.276 |
| 12-31-2011 | 3.87 | 3.373 |
| 09-30-2011 | 3.87 | 3.369 |
| 06-30-2011 | 3.839 | 3.364 |
| 03-31-2011 | 3.73 | 3.376 |
| 12-31-2010 | 3.698 | 3.404 |
| 09-30-2010 | 3.69 | 3.406 |
| 06-30-2010 | 3.692 | 3.396 |
| 03-31-2010 | 3.601 | 3.363 |
| 12-31-2009 | 3.258 | 3.155 |
| 09-30-2009 | 3.21 | 3.118 |
| 06-30-2009 | 3.159 | 3.083 |
| 03-31-2009 | 3.189 | 3.097 |
| 12-31-2008 | 3.183 | 3.024 |
| 09-30-2008 | 3.158 | 2.981 |
| 06-30-2008 | 3.121 | 2.92 |
| 03-31-2008 | 3.112 | 2.876 |
| 12-31-2007 | 3.36 | 2.941 |
| 09-30-2007 | 3.406 | 2.954 |
| 06-30-2007 | 3.386 | 2.962 |
| 03-31-2007 | 3.402 | 2.956 |
| 12-31-2006 | 3.677 | 3.154 |
| 09-30-2006 | 3.766 | 3.204 |
| 06-30-2006 | 3.835 | 3.241 |
| 03-31-2006 | 3.903 | 3.288 |
| 12-31-2005 | 4.017 | 3.409 |
| 09-30-2005 | 4.048 | 3.434 |
| 06-30-2005 | 4.052 | 3.45 |
| 03-31-2005 | 4.088 | 3.451 |
| 12-31-2004 | 4.319 | 3.429 |
| 09-30-2004 | 4.373 | 3.416 |
| 06-30-2004 | 4.427 | 3.424 |
| 03-31-2004 | 4.481 | 3.462 |
| 12-31-2003 | 4.558 | 3.452 |
| 09-30-2003 | 4.56 | 3.467 |
| 06-30-2003 | 4.592 | 3.517 |
| 03-31-2003 | 4.683 | 3.56 |
| 12-31-2002 | 4.757 | 3.675 |