| Income statement |
| Net interest income |
 |
$ |
5,586 |
 |
 |
$ |
5,304 |
 |
 |
$ |
5,365 |
 |
 |
$ |
5,209 |
 |
 |
$ |
5,374 |
 |
 |
$ |
5,302 |
 |
 |
$ |
5,094 |
 |
 |
$ |
5,153 |
 |
| Noninterest income |
 |
4,043 |
 |
 |
4,439 |
 |
 |
4,255 |
 |
 |
3,685 |
 |
 |
3,430 |
 |
 |
3,220 |
 |
 |
3,481 |
 |
 |
3,440 |
 |
| Total revenue |
 |
9,629 |
 |
 |
9,743 |
 |
 |
9,620 |
 |
 |
8,894 |
 |
 |
8,804 |
 |
 |
8,522 |
 |
 |
8,575 |
 |
 |
8,593 |
 |
| Provision for credit losses |
 |
583 |
 |
 |
651 |
 |
 |
772 |
 |
 |
833 |
 |
 |
1,165 |
 |
 |
804 |
 |
 |
888 |
 |
 |
840 |
 |
| Gains on sales of debt securities |
 |
139 |
 |
 |
233 |
 |
 |
296 |
 |
 |
273 |
 |
 |
304 |
 |
 |
189 |
 |
 |
93 |
 |
 |
44 |
 |
| Noninterest expense |
 |
5,282 |
 |
 |
5,070 |
 |
 |
5,058 |
 |
 |
4,717 |
 |
 |
4,832 |
 |
 |
4,620 |
 |
 |
4,490 |
 |
 |
4,494 |
 |
| Income before income taxes |
 |
3,903 |
 |
 |
4,255 |
 |
 |
4,086 |
 |
 |
3,617 |
 |
 |
3,111 |
 |
 |
3,287 |
 |
 |
3,290 |
 |
 |
3,303 |
 |
| Income tax expense |
 |
1,177 |
 |
 |
1,333 |
 |
 |
1,348 |
 |
 |
1,193 |
 |
 |
497 |
 |
 |
1,052 |
 |
 |
1,069 |
 |
 |
1,124 |
 |
| Net income |
 |
2,726 |
 |
 |
2,922 |
 |
 |
2,738 |
 |
 |
2,424 |
 |
 |
2,614 |
 |
 |
2,235 |
 |
 |
2,221 |
 |
 |
2,179 |
 |
| Average common shares issued and |
| outstanding (in thousands) |
 |
1,463,247 |
 |
 |
1,490,103 |
 |
 |
1,494,094 |
 |
 |
1,499,405 |
 |
 |
1,499,557 |
 |
 |
1,504,017 |
 |
 |
1,533,783 |
 |
 |
1,543,471 |
 |
| Average diluted common shares issued |
| and outstanding (in thousands) |
 |
1,489,481 |
 |
 |
1,519,641 |
 |
 |
1,523,306 |
 |
 |
1,526,288 |
 |
 |
1,542,482 |
 |
 |
1,546,347 |
 |
 |
1,592,250 |
 |
 |
1,581,848 |
 |
 |
 |
 |
 |
| Performance ratios |
| Return on average assets |
 |
1.39 |
% |
 |
1.47 |
% |
 |
1.42 |
% |
 |
1.38 |
% |
 |
1.49 |
% |
 |
1.32 |
% |
 |
1.38 |
% |
 |
1.38 |
% |
| Return on average common |
| shareholders' equity |
 |
22.42 |
 |
 |
23.74 |
 |
 |
21.86 |
 |
 |
19.92 |
 |
 |
21.58 |
 |
 |
19.02 |
 |
 |
18.47 |
 |
 |
18.64 |
 |
| Total equity to total assets (period end) |
 |
6.52 |
 |
 |
6.84 |
 |
 |
6.63 |
 |
 |
7.36 |
 |
 |
7.61 |
 |
 |
7.30 |
 |
 |
7.48 |
 |
 |
7.76 |
 |
| Total average equity to total |
| average assets |
 |
6.19 |
 |
 |
6.22 |
 |
 |
6.49 |
 |
 |
6.92 |
 |
 |
6.91 |
 |
 |
6.97 |
 |
 |
7.46 |
 |
 |
7.43 |
 |
| Dividend payout |
 |
42.70 |
 |
 |
40.85 |
 |
 |
35.06 |
 |
 |
39.64 |
 |
 |
36.76 |
 |
 |
40.25 |
 |
 |
41.40 |
 |
 |
42.48 |
 |
 |
 |
 |
 |
| Per common share data |
| Earnings |
 |
$ |
1.86 |
 |
 |
$ |
1.96 |
 |
 |
$ |
1.83 |
 |
 |
$ |
1.62 |
 |
 |
$ |
1.74 |
 |
 |
$ |
1.49 |
 |
 |
$ |
1.45 |
 |
 |
$ |
1.41 |
 |
| Diluted earnings |
 |
1.83 |
 |
 |
1.92 |
 |
 |
1.80 |
 |
 |
1.59 |
 |
 |
1.69 |
 |
 |
1.45 |
 |
 |
1.40 |
 |
 |
1.38 |
 |
| Dividends paid |
 |
0.80 |
 |
 |
0.80 |
 |
 |
0.64 |
 |
 |
0.64 |
 |
 |
0.64 |
 |
 |
0.60 |
 |
 |
0.60 |
 |
 |
0.60 |
 |
| Book value |
 |
33.26 |
 |
 |
33.83 |
 |
 |
34.06 |
 |
 |
33.38 |
 |
 |
33.49 |
 |
 |
32.07 |
 |
 |
31.47 |
 |
 |
31.15 |
 |
 |
 |
 |
 |
| Average balance sheet |
| Total loans and leases |
 |
$ |
371,071 |
 |
 |
$ |
357,288 |
 |
 |
$ |
350,279 |
 |
 |
$ |
345,662 |
 |
 |
$ |
343,099 |
 |
 |
$ |
340,484 |
 |
 |
$ |
335,684 |
 |
 |
$ |
327,801 |
 |
| Total assets |
 |
780,534 |
 |
 |
786,153 |
 |
 |
775,084 |
 |
 |
713,780 |
 |
 |
695,935 |
 |
 |
669,607 |
 |
 |
647,245 |
 |
 |
638,276 |
 |
| Total deposits |
 |
418,840 |
 |
 |
414,569 |
 |
 |
405,307 |
 |
 |
385,760 |
 |
 |
381,381 |
 |
 |
373,933 |
 |
 |
365,986 |
 |
 |
364,403 |
 |
| Long-term debt(1) |
 |
70,596 |
 |
 |
66,788 |
 |
 |
68,927 |
 |
 |
67,399 |
 |
 |
65,702 |
 |
 |
64,880 |
 |
 |
65,940 |
 |
 |
67,694 |
 |
| Common shareholders' equity |
 |
48,238 |
 |
 |
48,816 |
 |
 |
50,212 |
 |
 |
49,343 |
 |
 |
48,015 |
 |
 |
46,592 |
 |
 |
48,213 |
 |
 |
47,392 |
 |
| Total shareholders' equity |
 |
48,293 |
 |
 |
48,871 |
 |
 |
50,269 |
 |
 |
49,400 |
 |
 |
48,074 |
 |
 |
46,652 |
 |
 |
48,274 |
 |
 |
47,456 |
 |
 |
 |
 |
 |
| Capital ratios (period end) |
| Risk-based capital: |
| Tier 1 capital |
 |
7.85 |
% |
 |
8.25 |
% |
 |
8.08 |
% |
 |
8.20 |
% |
 |
8.22 |
% |
 |
8.13 |
% |
 |
8.09 |
% |
 |
8.48 |
% |
| Total capital |
 |
11.87 |
 |
 |
12.17 |
 |
 |
11.95 |
 |
 |
12.29 |
 |
 |
12.43 |
 |
 |
12.38 |
 |
 |
12.42 |
 |
 |
12.93 |
 |
| Leverage |
 |
5.73 |
 |
 |
5.95 |
 |
 |
5.92 |
 |
 |
6.24 |
 |
 |
6.29 |
 |
 |
6.35 |
 |
 |
6.47 |
 |
 |
6.72 |
 |
 |
 |
 |
 |
| Market price per share of |
| common stock |
| Closing |
 |
$ |
80.43 |
 |
 |
$ |
78.04 |
 |
 |
$ |
79.03 |
 |
 |
$ |
66.84 |
 |
 |
$ |
69.57 |
 |
 |
$ |
63.80 |
 |
 |
$ |
70.36 |
 |
 |
$ |
68.02 |
 |
| High closing |
 |
82.50 |
 |
 |
83.53 |
 |
 |
79.89 |
 |
 |
72.48 |
 |
 |
71.42 |
 |
 |
71.94 |
 |
 |
76.90 |
 |
 |
69.18 |
 |
| Low closing |
 |
72.85 |
 |
 |
74.87 |
 |
 |
68.00 |
 |
 |
65.63 |
 |
 |
54.15 |
 |
 |
57.90 |
 |
 |
67.45 |
 |
 |
58.85 |
 |
 |
 |
 |
 |