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:
| School | Years of Participation | OCC Championships | Last OCC Championship | Last Outright OCC Championship |
| --- | --- | --- | --- | --- |
| Big Walnut | 1997–present | 7.0 | 2011 | 2008 |
| Central Crossing | 2002–present | 0.0 | —— | —— |
| Chillicothe | 1977–2005 | 3.0 | 1990 | 1990 |
| Delaware Hayes | 1968–present | 2.0 | 1996 | 1996 |
| Dublin Coffman | 1991–present | 6.0 | 2012 | 2009 |
| Dublin Jerome | 2004–present | 1.0 | 2008 | —— |
| Dublin Scioto | 1995–present | 3.0 | 2003 | 2003 |
| Franklin Heights | 1981–present | 4.0 | 1997 | 1997 |
| Gahanna Lincoln | 1968–present | 14.0 | 2001 | 1998 |
| Grove City | 1981–present | 9.0 | 2005 | 2005 |
| Groveport Madison | 1974–present | 3.0 | 1982 | —— |
| Hilliard Bradley | 2009–present | 0.0 | —— | —— |
| Hilliard Darby | 1997–present | 2.0 | 2012 | 2012 |
| Hilliard Davidson | 1974–present | 13.0 | 2012 | 2011 |
| Lancaster | 1997–present | 4.0 | 2007 | 2006 |
| Marysville | 1991–present | 4.0 | 2007 | 2000 |
| Mount Vernon | 1968–present | 3.0 | 2002 | 1998 |
| Marysville | 1991–present | 4.0 | 2007 | 2000 |
| New Albany | 2006–present | 4.0 | 2012 | 2012 |
| Newark | 1997–present | 2.0 | 2005 | 2005 |
| Olentangy | 1997–present | 0.0 | —— | —— |
| Olentangy Liberty | 2004–present | 5.0 | 2011 | 2005 |
| Olentangy Orange | 2008–present | 2.0 | 2011 | —— |
| Pickerington Central | 1981–present | 14.0 | 2012 | 2011 |
| Pickerington North | 2004–present | 2.0 | 2012 | —— |
| Pleasant View | 1968–1969 | 0.0 | —— | —— |
| Reynoldsburg | 1968–present | 1.0 | 1992 | —— |
| Thomas Worthington | 1968–present | 9.0 | 1992 | 1986 |
| Upper Arlington | 1981–present | 10.0 | 2008 | 2008 |
| Watkins Memorial | 1991–present | 3.0 | 2006 | —— |
| Westerville Central | 2004–present | 2.0 | 2011 | 2006 |
| Westerville North | 1977–present | 5.0 | 1995 | 1995 |
| Westerville South | 1968–present | 9.0 | 2011 | 2010 |
| Westland | 1970–present | 3.0 | 1993 | 1993 |
| Whitehall Yearling | 1968–1999 | 5.0 | 1993 | 1985 |
Question:
What are the years of participation for pickerington north?
Answer:
2004–present