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 | Division | League | Regular Season | Playoffs | Open Cup |
| --- | --- | --- | --- | --- | --- |
| 1998.0 | 4.0 | USISL PDSL | 4th, Central | Division Finals | 1st Round |
| 1999.0 | 4.0 | USL PDL | 5th, Heartland | Did not qualify | Did not qualify |
| 2000.0 | 4.0 | USL PDL | 4th, Rocky Mountain | Did not qualify | Did not qualify |
| 2001.0 | 4.0 | USL PDL | 5th, Rocky Mountain | Did not qualify | Did not qualify |
| 2002.0 | 4.0 | USL PDL | 5th, Heartland | Did not qualify | Did not qualify |
| 2003.0 | 4.0 | USL PDL | 5th, Heartland | Did not qualify | Did not qualify |
| 2004.0 | 4.0 | USL PDL | 6th, Heartland | Did not qualify | Did not qualify |
| 2005.0 | 4.0 | USL PDL | 3rd, Heartland | Did not qualify | Did not qualify |
| 2006.0 | 4.0 | USL PDL | 3rd, Heartland | Did not qualify | Did not qualify |
| 2007.0 | 4.0 | USL PDL | 3rd, Heartland | Did not qualify | 1st Round |
| 2008.0 | 4.0 | USL PDL | 5th, Heartland | Did not qualify | Did not qualify |
| 2009.0 | 4.0 | USL PDL | 6th, Heartland | Did not qualify | Did not qualify |
| 2010.0 | 4.0 | USL PDL | 7th, Heartland | Did not qualify | Did not qualify |
| 2011.0 | 4.0 | USL PDL | 4th, Heartland | Did not qualify | Did not qualify |
| 2012.0 | 4.0 | USL PDL | 5th, Heartland | Did not qualify | Did not qualify |
Question:
What is the lowest year that regular season is 4th, Rocky Mountain?
Answer:
2000.0