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:
| Episode | Title | Airdate (Canada) | Airdate (USA) | CBS airdate |
| --- | --- | --- | --- | --- |
| 53.0 | "Lucky Break" | 18 April 2003 | 12 March 2004 | 16 September 2006 |
| 54.0 | "Weird Science" | 25 April 2003 | 1 May 2004 | 15 September 2007 |
| 55.0 | "She Got Game" | 2 May 2003 | 7 May 2004 | 22 September 2007 |
| 56.0 | "Remember When" | 9 May 2003 | 14 May 2004 | 29 September 2007 |
| 57.0 | "Funny Business" | 16 May 2003 | 21 May 2004 | 12 January 2008 |
| 58.0 | "Busted" | 21 November 2003 | 18 June 2004 | 19 January 2008 |
| 59.0 | "The Beat Goes On" | 26 March 2004 | 2 October 2004 | 26 January 2008 |
| 60.0 | "Game, Set Up & Match" | 22 October 2004 | 27 November 2004 | 1 March 2008 |
| 61.0 | "While You Were Sleeping" | 28 January 2005 | 18 February 2005 | 22 March 2008 |
| 62.0 | "Identity Crisis" | 25 February 2005 | 25 February 2005 | 29 March 2008 |
| 63.0 | "A Knight to Remember" | 4 March 2005 | 4 March 2005 | 5 April 5, 2008 |
| 64.0 | "Just Quacks" | 11 March 2005 | 11 March 2005 | 12 April 2008 |
| 65.0 | "Griffin's Girl" | 18 March 2005 | 18 March 2005 | 19 April 2008 |
| 66.0 | "Poor Richard" | 25 March 2005 | 25 March 2005 | 26 April 2008 |
| 67.0 | "My Big Fat Braceface Life" | 1 April 2005 | 1 April 2005 | 6 June 2009 |
| 68.0 | "Clean Slate" | 8 April 2005 | 8 April 2005 | 20 June 2009 |
| 69.0 | "The Loooong Weekend" | 15 April 2005 | 15 April 2005 | 27 June 2009 |
| 70.0 | "Act Your Age" | 22 April 2005 | 22 April 2005 | 11 July 2009 |
| 71.0 | "A Dog's Life" | 29 April 2005 | 29 April 2005 | 18 July 2009 |
| 72.0 | "The Domino Effect" | 13 May 2005 | 13 May 2005 | 25 July 2009 |
| 73.0 | "The Father Factor" | 20 May 2005 | 20 May 2005 | 15 August 2009 |
| 74.0 | "All About Sharon" | 11 June 2005 | 11 June 2005 | 22 August 2009 |
| 75.0 | "23's A Crowd" | 15 June 2005 | 15 June 2005 | 29 August 2009 |
| 76.0 | "Lights! Camera! Ego!" | 15 June 2005 | 15 June 2005 | 5 September 2009 |
| 77.0 | "Vegging Out" | 22 July 2005 | 22 July 2005 | 12 September 2009 |
| 78.0 | "Leap of Faith" | 27 August 2005 | 27 August 2005 | 12 September 2009 |
Question:
Which episode aired in the USA on 20 May 2005?
Answer:
73.0