Table:
|  | 2019 | 2018 |
| --- | --- | --- |
| Franchise rental revenues | $272,815 | $259,047 |
| Royalties | 163,047 | 155,939 |
| Franchise fees and other | 6,764 | 6,646 |
| Franchise royalties and other | 169,811 | 162,585 |
| Franchise contributions for advertising and other services | 170,674 | — |
| Total franchise revenues | $613,300 | $421,632 |
|  |  |  |
| Franchise occupancy expenses (excluding depreciation and amortization) | $166,584 | $158,319 |
| Franchise support and other costs | 12,110 | 11,593 |
| Franchise advertising and other services expenses | 178,093 | — |
| Total franchise costs | $356,787 | $169,912 |
| Franchise costs as a % of total franchise revenues | 58.2% | 40.3% |
|  |  |  |
| Average number of franchise restaurants | 2,081 | 2,028 |
| % increase | 2.6% |  |
| Franchised restaurant sales | $3,167,920 | $3,018,067 |
| Franchise restaurant AUV | $1,523 | $1,488 |
| Increase in franchise-operated same-store sales | 1.3% | 0.1% |
| Royalties as a percentage of total franchise restaurant sales | 5.1% | 5.2% |
Paragraphs:
The following table presents franchise revenues and costs in each fiscal year and other information we believe is useful in analyzing the change in franchise operating results (dollars in thousands):
Franchise rental revenues increased $13.8 million, or 5.3%, in 2019 versus a year ago due primarily to an increase in the number of franchised restaurants and, to a lesser extent, an increase in franchise same-store sales. The increase in the number of restaurants leased or subleased from the Company due to our refranchising strategy, contributed additional rental revenues of $12.4 million in 2019.
Question:
What is the difference in the total franchise revenues between 2018 and 2019?