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:
| No. in series | No. in season | Title | Directed by | Written by | Original air date | Production code | U.S. viewers (millions) |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 16.0 | 1.0 | " American Duos " | John Landis | Steve Franks & James Roday | July13,2007 | 2002.0 | 4.33 |
| 17.0 | 2.0 | "65 Million Years Off" | Tim Matheson | Steve Franks | July20,2007 | 2003.0 | N/A |
| 18.0 | 3.0 | "Psy vs. Psy" | Mel Damski | Andy Berman | July27,2007 | 2001.0 | N/A |
| 19.0 | 4.0 | "Zero to Murder in Sixty Seconds" | Stephen Surjik | Saladin K. Patterson | August3,2007 | 2004.0 | N/A |
| 20.0 | 5.0 | "And Down the Stretch Comes Murder" | Michael Zinberg | Josh Bycel | August10,2007 | 2005.0 | 4.43 |
| 21.0 | 6.0 | "Meat Is Murder, But Murder Is Also Murder" | Eric Laneuville | Daniel Hsia | August17,2007 | 2006.0 | N/A |
| 22.0 | 7.0 | "If You're So Smart, Then Why Are You Dead?" | Arlene Sanford | Anupam Nigam | August24,2007 | 2007.0 | 4.25 |
| 23.0 | 8.0 | "Rob-a-Bye Baby" | Paul Lazarus | Tami Sagher | September7,2007 | 2008.0 | 3.97 |
| 24.0 | 9.0 | "Bounty Hunters!" | John Badham | Andy Berman | September14,2007 | 2009.0 | 4.15 |
| 25.0 | 10.0 | "Gus's Dad May Have Killed an Old Guy" | Oz Scott | Saladin K. Patterson | December7,2007 | 2011.0 | N/A |
| 26.0 | 11.0 | "There's Something About Mira" | Joanna Kerns | Josh Bycel & Daniel Hsia | January11,2008 | 2012.0 | N/A |
| 27.0 | 12.0 | "The Old and the Restless" | Jason Ensler | Anupam Nigam | January18,2008 | 2013.0 | N/A |
| 28.0 | 13.0 | "Lights, Camera... Homicidio" | Matt Shakman | Andy Berman | January25,2008 | 2015.0 | N/A |
| 29.0 | 14.0 | "Dis-Lodged" | Mel Damski | Tim Meltreger | February1,2008 | 2010.0 | N/A |
| 30.0 | 15.0 | "Black and Tan: A Crime of Fashion" | Mel Damski | Steve Franks & James Roday | February8,2008 | 2014.0 | N/A |
Question:
How many production codes had a US viewership of 4.43 million?
Answer:
1.0