EXHIBIT 12.1

STATEMENT OF COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES

(dollars in thousands)

	Six Months Ended June 30, 2016		Year Ended December 31,
			2015		2014		2013		2012		2011
Consolidated Earnings:
Income before income taxes	$	36,413	$	82,511	$	77,233	$	73,490	$	59,243	$	61,249
Add: Fixed charges, excluding interest on deposits	721		1,281		1,278		1,290		1,262		1,269
Earnings available for fixed charges, excluding interest on deposits	37,134		83,792		78,511		74,780		60,505		62,518
Add: Interest on deposits	5,909		10,886		11,012		12,538		13,477		19,794
Earnings available for fixed charges, including interest on deposits	$	43,043	$	94,678	$	89,523	$	87,318	$	73,982	$	82,312
Fixed Charges:
Interest expense, excluding interest on deposits	$	524	$	944	$	948	$	943	$	973	$	964
Interest portion of rental expenses	197		337		330		347		289		305
Total fixed charges, excluding interest on deposits	721		1,281		1,278		1,290		1,262		1,269
Add: Interest on deposits	5,909		10,886		11,012		12,538		13,477		19,794
Total fixed charges, including interest on deposits	$	6,630	$	12,167	$	12,290	$	13,828	$	14,739	$	21,063
Ratio of Earnings to Fixed Charges:1
Excluding interest on deposits	51.5x		65.4x		61.4x		58.0x		47.9x		49.3x
Including interest on deposits	6.5x		7.8x		7.3x		6.3x		5.0x		3.9x

¹ The Company had no preferred stock outstanding during any period presented, and accordingly, the ratio of earnings to combined fixed charges and preferred stock dividends is the same as the ratio of earnings to fixed charges.