Table:
|  | Year Ended December 31, |  |
| --- | --- | --- |
|  | 2019 | 2018 |
| Current income tax expense (benefit): |  |  |
| Federal | $5 | $4 |
| State | 10 | 5 |
| Deferred income tax expense (benefit): |  |  |
| Federal | 4,206 | 4,860 |
| State | (11,346) | 665 |
| Income tax expense (benefit) | $(7,125) | $5,534 |
Paragraphs:
GreenSky, Inc. NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued) (United States Dollars in thousands, except per share data, unless otherwise stated)
Note 13. Income Taxes
GreenSky, Inc. is taxed as a corporation and pays corporate federal, state and local taxes on income allocated to it from GS Holdings based upon GreenSky, Inc.’s economic interest held in GS Holdings. GS Holdings is treated as a pass-through partnership for income tax reporting purposes and not subject to federal income tax. Accordingly, the Company is not liable for income taxes on the portion of GS Holdings' earnings not allocated to it. The results for the year ended December 31, 2017 do not reflect income tax expense because, prior to the Reorganization Transactions, the consolidated GSLLC (and subsequently GS Holdings) pass-through entity was not subject to corporate tax.
The Company's income before income tax expense of $88,848, $133,514 and $138,668 during the years ended December 31, 2019, 2018 and 2017, respectively, consisted entirely of income earned in the United States.
Components of income tax expense consisted of the following for the years indicated: Year
Question:
Which years does the table provide information for Components of income tax expense? 
Answer: 2019, 2018