pre_text: part ii item 5 . market for registrant 2019s common equity , related stockholder matters and issuer purchases of equity securities . price range our common stock trades on the nasdaq global select market under the symbol 201cmktx 201d . the range of closing price information for our common stock , as reported by nasdaq , was as follows : on february 20 , 2015 , the last reported closing price of our common stock on the nasdaq global select market was $ 78.97 . holders there were 28 holders of record of our common stock as of february 20 , 2015 . dividend policy during 2014 , 2013 and 2012 , we paid quarterly cash dividends of $ 0.16 per share , $ 0.13 per share and $ 0.11 per share , respectively . on december 27 , 2012 , we paid a special cash dividend of $ 1.30 per share . in january 2015 , our board of directors approved a quarterly cash dividend of $ 0.20 per share payable on february 26 , 2015 to stockholders of record as of the close of business on february 12 , 2015 . any future declaration and payment of dividends will be at the sole discretion of our board of directors . the board of directors may take into account such matters as general business conditions , our financial results , capital requirements , contractual obligations , legal and regulatory restrictions on the payment of dividends to our stockholders or by our subsidiaries to their respective parent entities , and such other factors as the board of directors may deem relevant . recent sales of unregistered securities securities authorized for issuance under equity compensation plans please see the section entitled 201cequity compensation plan information 201d in item 12. .
post_text: .
table: 2014: High Low
table: January 1, 2014 to March 31, 2014 $67.16 $57.99
table: April 1, 2014 to June 30, 2014 $59.65 $50.30
table: July 1, 2014 to September 30, 2014 $62.05 $47.50
table: October 1, 2014 to December 31, 2014 $73.25 $61.15
table: 2013: High Low
table: January 1, 2013 to March 31, 2013 $41.85 $34.79
table: April 1, 2013 to June 30, 2013 $47.80 $37.09
table: July 1, 2013 to September 30, 2013 $61.47 $47.59
table: October 1, 2013 to December 31, 2013 $70.60 $61.34
question: Analyse this data from a financial earnings document. by how much did the high of mktx stock increase from april 12 , 2014 to march 31 , 2014?