Table:
|  |  |  | Year Ended October 31, |  |  |
| --- | --- | --- | --- | --- | --- |
|  | 2019 | 2018 | 2017 | 2016 | 2015 |
|  |  |  | (In thousands, except per share data) |  |  |
| Net sales | $3,440,258 | $3,236,004 | $3,342,226 | $2,816,057 | $2,803,480 |
| Operating income | 67,994 | 29,700 | 425,239 | 294,111 | 335,998 |
| Net income | 53,294 | 61,431 | 279,745 | 188,961 | 216,001 |
| Basic earnings per share | 2.41 | 2.70 | 12.30 | 8.37 | 9.52 |
| Diluted earnings per share | 2.41 | 2.70 | 12.30 | 8.37 | 9.52 |
| Working capital | 365,430 | 367,600 | 650,817 | 465,135 | 396,834 |
| Total assets | 1,774,134 | 1,659,440 | 1,733,243 | 1,422,700 | 1,246,752 |
| Long-term debt, less current maturities | 55,000 | — | — | — | — |
| Stockholders’ equity | 1,417,675 | 1,387,893 | 1,432,862 | 1,190,262 | 1,029,861 |
| Cash dividends declared per share | $1.28 | $1.28 | $2.04 | $1.90 | $1.38 |
Paragraphs:
Item 6. Selected Financial Data
Various factors affecting the comparability of the information included in the table above are discussed in Management’s Discussion and Analysis of Financial Condition and Results of Operations.
Question:
What is the change in operating income between fiscal years 2019 and 2018?