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 | Album details | Peak chart positions\nUS\nBillboard 200 | Peak chart positions\nUS\nChristian | Peak chart positions\nUS\nHeatseekers |
| --- | --- | --- | --- | --- |
| 2001 | The Moon Is Down\n\nReleased: March 27, 2001\nLabel: Tooth & Nail\nFormat: CD, LP | — | — | — |
| 2003 | How to Start a Fire\n\nReleased: February 11, 2003\nLabel: Tooth & Nail\nFormat: CD, LP | 133 | 6 | 1 |
| 2004 | Hide Nothing\n\nReleased: August 24, 2004\nLabel: Tooth & Nail\nFormat: CD, LP | 122 | 4 | 3 |
| 2012 | Penny Black\n\nReleased: October 23, 2012\nLabel: Rise\nFormat: CD | 62 | 3 | — |
Question:
how many albums has this band released?
Answer:
4