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 | Date | Venue | City | Country | Notes |
| --- | --- | --- | --- | --- | --- |
| 2012 | Oct 27 - 31 | Nara Prefectural New Public Hall | Nara | Japan |  |
| 2011 | Noc 28 - Dec 1st | Hyatt Regency Scottsdale Resort and Spa @ Gainey Ranch | Scottsdale, Arizona | USA |  |
| 2010 | Oct 25 - 29 | Palazzo degli Affari | Firenze | Italy |  |
| 2009 | Oct 19 - 24 | Beijing Hotel | Beijing | China |  |
| 2008 | Oct 27 – Nov 1 | Pan Pacific Hotel | Vancouver, BC | Canada |  |
| 2007 | Sep 24-29 | University of Augsburg | Augsburg | Germany |  |
| 2006 | Oct 23-27 | Fess Parker's DoubleTree Resort Hotel | Santa Barbara | USA | ISBN 1-59593-447-2 |
| 2005 | Nov 6-11 | Hilton | Singapore | Singapore | ISBN 1-59593-044-2 |
| 2004 | Oct 10-16 |  | New York | USA | ISBN 1-58113-893-8 |
| 2003 | Nov 2-8 |  | Berkeley, California | USA | ISBN 1-58113-722-2 |
| 2002 | Dec 1-6 |  | Juan-les-Pins on the French Riviera | France | ISBN 1-58113-620-X |
| 2001 | Sep 30 - Oct 5 |  | Ottawa | Canada | ISBN 1-58113-394-4 |
| 2000 | Oct 30 - Nov 3 | Marina del Rey | Los Angeles, CA | USA | Proceedings: ISBN 1-58113-198-4; Workshops: ISBN 1-58113-311-1 |
| 1999 | Oct 30 - Nov 5 |  | Orlando, Florida | USA | Proc. Part 1: ISBN 1-58113-151-8; Proc. Part 2: ISBN 1-58113-239-5 |
| 1998 | Sep 12-16 | University of Bristol | Bristol | United Kingdom | ISBN 0-201-30990-4 |
| 1997 | Nov 9-13 |  | Seattle, WA | USA | ISBN 0-89791-991-2 |
| 1996 | Nov 18 - 22 | Hynes Convention Center | Boston, MA | USA | ISBN 0-89791-871-1 |
| 1995 | Nov 5-9 |  | San Francisco, CA | USA | ISBN 0-89791-751-0 |
| 1994 | Oct 15-20 |  | San Francisco, CA | USA | ISBN 0-89791-686-7 |
| 1993 | Aug 1-6 |  | Anaheim, CA. | USA | ISBN 0-89791-596-8 |
Question:
how many consecutive years has the acm multimedia workshops been held?
Answer:
20