pre_text: Item 5. Market for Registrant's Common Equity, Related Shareholder Matters and Issuer Purchases of Equity Securities. Our common shares, without par value, are traded on the NASDAQ Stock Market LLC under the symbol “AGYS”. The high and low sales prices for the common shares for each quarter during the past two fiscal years are presented in the table below. The closing price of the common shares on May 21, 2019, was $22.51 per share. There were 1,561 active shareholders of record. We did not pay dividends in fiscal 2019 or 2018 and are unlikely to do so in the foreseeable future. The current policy of the Board of Directors is to retain any available earnings for use in the operations of our business.
table: 2019 High Low
table: Fourth quarter $21.17 $13.92
table: Third quarter $17.02 $13.88
table: Second quarter $16.72 $14.72
table: First quarter $15.55 $11.78
table: 2018 High Low
table: Fourth quarter $13.00 $10.77
table: Third quarter $12.98 $11.30
table: Second quarter $12.14 $9.80
table: First quarter $10.30 $9.08
question: Analyse this data from a financial earnings document. What was the increase / (decrease) in the 2019 fourth quarter between low to high?