Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Year | Theme | Artist | Composition | Mintage | Issue Price |
| --- | --- | --- | --- | --- | --- |
| 2000.0 | Year of the Dragon | Harvey Chan | 75% gold, 25% silver | 8874.0 | $388.88 |
| 2001.0 | Year of the Snake | Harvey Chan | 75% gold, 25% silver | 6571.0 | $388.88 |
| 2002.0 | Year of the Horse | Harvey Chan | 75% gold, 25% silver | 6843.0 | $388.88 |
| 2003.0 | Year of the Goat | Harvey Chan | 75% gold, 25% silver | 3927.0 | $398.88 |
| 2004.0 | Year of the Monkey | Harvey Chan | 75% gold, 25% silver | 3318.0 | $398.88 |
| 2005.0 | Year of the Rooster | Harvey Chan | 75% gold, 25% silver | 4888.0 | $398.88 |
| 2006.0 | Year of the Dog | Harvey Chan | 75% gold, 25% silver | 4888.0 | $448.88 |
| 2007.0 | Year of the Pig | Harvey Chan | 75% gold, 25% silver | 4888.0 | $498.95 |
| 2008.0 | Year of the Rat | Harvey Chan | 75% gold, 25% silver | 4888.0 | $508.95 |
| 2009.0 | Year of the Ox | Harvey Chan | 75% gold, 25% silver | 4888.0 | $638.88 |
| 2010.0 | Year of the Tiger | Harvey Chan | 75% gold, 25% silver | 4888.0 | $555.55 |
| 2011.0 | Year of the Rabbit | Harvey Chan | 75% gold, 25% silver | 4888.0 | $638.88 |
Question:
What was the theme when the issue price was $508.95?
Answer:
Year of the Rat