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:
| Actor | Character | Soap Opera | Years | Duration |
| --- | --- | --- | --- | --- |
| Ray Meagher | Alf Stewart | Home and Away | 1988— | 26 years |
| Tom Oliver | Lou Carpenter | Neighbours | 1988, 1992— | 22 years |
| Lynne McGranger | Irene Roberts | Home and Away | 1993— | 21 years |
| Kate Ritchie | Sally Fletcher | Home and Away | 1988–2008, 2013 | 20 years |
| Alan Fletcher | Karl Kennedy | Neighbours | 1994— | 20 years |
| Jackie Woodburne | Susan Kennedy | Neighbours | 1994— | 20 years |
| Ryan Moloney | Toadfish Rebecchi | Neighbours | 1995, 1996— | 18 years |
| Ian Smith | Harold Bishop | Neighbours | 1987–1991, 1996–2009, 2011 | 17 years |
| Stefan Dennis | Paul Robinson | Neighbours | 1985–1992, 1993, 2004— | 17 years |
| Norman Coburn | Donald Fisher | Home and Away | 1988–2003, 2004, 2005, 2007 | 15 years |
| Lyn Collingwood | Colleen Smart | Home and Away | 1988–1989, 1997, 1999–2013 | 15 years |
| Kym Valentine | Libby Kennedy | Neighbours | 1994–2004, 2005, 2007–2008, 2009–2011 | 14 years |
| Ada Nicodemou | Leah Patterson-Baker | Home and Away | 2000— | 14 years |
| John Wood | Tom Croydon | Blue Heelers | 1993–2006 | 13 years |
| Julie Nihill | Chris Riley | Blue Heelers | 1993–2006 | 13 years |
| Martin Sacks | PJ Hasham | Blue Heelers | 1993–2006 | 13 years |
| Judy Nunn | Ailsa Stewart | Home and Away | 1988–2000, 2002, 2003 | 12 years |
| Anne Haddy | Helen Daniels | Neighbours | 1985–1997 | 12 years |
| Brian Wenzel | Frank Gilroy | A Country Practice | 1981–1993 | 12 years |
| Shane Porteous | Terence Elliott | A Country Practice | 1981–1993 | 12 years |
| Joyce Jacobs | Esme Watson | A Country Practice | 1981–1993 | 12 years |
| Carla Bonner | Stephanie Scully | Neighbours | 1999–2010, 2013 | 11 years |
| Anne Charleston | Madge Bishop | Neighbours | 1986–1992, 1996–2001 | 11 years |
| Lorrae Desmond | Shirley Dean-Gilroy | A Country Practice | 1981–1992 | 11 years |
| Gordon Piper | Bob Hatfield | A Country Practice | 1981–1992 | 11 years |
| Judith McGrath | Von Ryan | All Saints | 1998–2009 | 11 years |
| Emily Symons | Marilyn Chambers | Home and Away | 1989–1992, 1995–1999, 2001, 2010— | 11 years |
| Ryan Clark | Sam Marshall | Home and Away | 1991–2001, 2002, 2005 | 10 years |
| Janet Andrewartha | Lyn Scully | Neighbours | 1999-2006, 2008, 2009-2011 | -9 years |
Question:
Which actor played Harold Bishop for 17 years?
Answer:
Ian Smith