EXHIBIT 12.1

Computation of Ratios of Earnings to Fixed Charges

	Years ended December 31,
	2017		2016		2015		2014		2013
Excluding interest on deposits		3.96		3.91		2.19		2.21		2.41
Including interest on deposits		2.38		2.48		1.76		1.87		2.02

Note: The ratio of earnings to fixed charges is calculated by adding income before income taxes plus fixed charges and dividing that sum by fixed charges.

	Years ended December 31,
	2017		2016		2015		2014		2013
	(in thousands)
Income before income taxes	$	252,738	$	233,380	$	126,895	$	147,234	$	178,940
Interest on deposits	$	97,846	$	77,562	$	60,256	$	47,553	$	47,791
Borrowings and long-term debt	$	76,261	$	71,212	$	96,498	$	114,293	$	120,586
1/3 of net rental expense	$	9,238	$	9,052	$	10,582	$	7,082	$	6,631
Total fixed charges, including interest on deposits	$	183,345	$	157,826	$	167,336	$	168,928	$	175,008
Total fixed charges, excluding interest on deposits	$	85,499	$	80,264	$	107,080	$	121,375	$	127,217