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 | Butterfly | Artist | Mintage | Issue Price | Finish |
| --- | --- | --- | --- | --- | --- |
| 2004.0 | Tiger Swallowtail | Jianping Yan | 19910.0 | $39.95 | Hologram |
| 2004.0 | Clouded Sulphur | Susan Taylor | 15281.0 | $39.95 | Selective Gold Plating |
| 2005.0 | Monarch | Susan Taylor | 20000.0 | $39.95 | Colourized, Orange and Black |
| 2005.0 | Great Spangled Fritillary | Jianping Yan | 20000.0 | $39.95 | Hologram |
| 2006.0 | Short-Tailed Swallowtail | Susan Taylor | 20000.0 | $39.95 | Proof (with coloured butterfly) |
| 2006.0 | Silvery Blue | Jianping Yan | 20000.0 | $39.95 | Hologram |
Question:
What mintage earlier than the year 2006 has the butterfly great spangled fritillary.
Answer:
20000.0