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:
| State | Last execution date | Name | Crime | Method |
| --- | --- | --- | --- | --- |
| United States Federal Government | 18 March 2003 | Louis Jones, Jr. | aggravated murder | lethal injection |
| United States military | 13 April 1961 | John A. Bennett | rape and attempted murder | hanging |
| Alabama | 25 July 2013 | Andrew Reid Lackey | aggravated murder | lethal injection |
| Alaska | never used |  |  |  |
| Arizona | 23 October 2013 | Robert Glen Jones, Jr. | aggravated murder | lethal injection |
| Arkansas | 28 November 2005 | Eric Nance | aggravated murder | lethal injection |
| California | 17 January 2006 | Clarence Ray Allen | aggravated murder | lethal injection |
| Colorado | 13 October 1997 | Gary Lee Davis | aggravated murder | lethal injection |
| Connecticut | 13 May 2005 | Michael Bruce Ross | aggravated murder | lethal injection |
| Delaware | 20 April 2012 | Shannon M. Johnson | aggravated murder | lethal injection |
| Florida | 26 February 2014 | Paul Augustus Howell | aggravated murder | lethal injection |
| Georgia | 21 February 2013 | Andrew Allen Cook | aggravated murder | lethal injection |
| Hawaii | never used |  |  |  |
| Idaho | 12 June 2012 | Richard Albert Leavitt | aggravated murder | lethal injection |
| Illinois | 17 March 1999 | Andrew Kokoraleis | aggravated murder | lethal injection |
| Indiana | 11 December 2009 | Matthew Eric Wrinkles | aggravated murder | lethal injection |
| Iowa | 6 September 1962 | Charles A. Kelly | murder | hanging |
| Kansas | 22 June 1965 | George York and James Latham | murder | hanging |
| Kentucky | 21 November 2008 | Marco Allen Chapman | aggravated murder | lethal injection |
| Louisiana | 7 January 2010 | Gerald J. Bordelon | aggravated murder | lethal injection |
| Maine | 21 November 1885 | Daniel Wilkinson | murder | hanging |
| Maryland | 5 December 2005 | Wesley Baker | aggravated murder | lethal injection |
| Massachusetts | 9 May 1947 | Philip Bellino and Edward Gertson | murder | electric chair |
| Michigan | never used |  |  |  |
| Minnesota | 13 February 1906 | William Williams | murder | hanging |
| Mississippi | 20 June 2012 | Gary Carl Simmons, Jr. | aggravated murder | lethal injection |
| Missouri | 26 February 2014 | Michael Anthony Taylor | aggravated murder | lethal injection |
| Montana | 11 August 2006 | David Thomas Dawson | aggravated murder | lethal injection |
| Nebraska | 2 December 1997 | Robert E. Williams | aggravated murder | electric chair |
| Nevada | 26 April 2006 | Daryl Linnie Mack | aggravated murder | lethal injection |
| New Hampshire | 14 July 1939 | Howard Long | murder | hanging |
| New Jersey | 22 January 1963 | Ralph Hudson | murder | electric chair |
| New Mexico | 6 November 2001 | Terry D. Clark | aggravated murder | lethal injection |
| New York | 15 August 1963 | Eddie Mays | murder | electric chair |
| North Carolina | 18 August 2006 | Samuel Russell Flippen | aggravated murder | lethal injection |
| North Dakota | 17 October 1905 | John Rooney | murder | hanging |
| Ohio | 16 January 2014 | Dennis B. McGuire | aggravated murder | lethal injection |
| Oklahoma | 23 January 2014 | Kenneth Eugene Hogan | aggravated murder | lethal injection |
| Oregon | 16 May 1997 | Harry Charles Moore | aggravated murder | lethal injection |
| Pennsylvania | 6 July 1999 | Gary M. Heidnik | aggravated murder | lethal injection |
| Rhode Island | 14 February 1845 | John Gordon | murder | hanging |
| South Carolina | 6 May 2011 | Jeffrey Brian Motts | aggravated murder | lethal injection |
| South Dakota | 30 October 2012 | Donald Eugene Moeller | aggravated murder | lethal injection |
| Tennessee | 2 December 2009 | Cecil J. Johnson, Jr. | aggravated murder | lethal injection |
| Texas | 5 February 2014 | Suzanne Margaret Basso | aggravated murder | lethal injection |
| Utah | 18 June 2010 | Ronnie Lee Gardner | aggravated murder | firing squad |
| Vermont | 8 December 1954 | Donald DeMag | murder | electric chair |
| Virginia | 16 January 2013 | Robert Charles Gleason, Jr. | aggravated murder | electric chair |
| Washington | 10 September 2010 | Cal Coburn Brown | aggravated murder | lethal injection |
| West Virginia | 3 April 1959 | Elmer Brunner | aggravated murder | electric chair |
| Wisconsin | 21 August 1851 | John McCaffary | murder | hanging |
| Wyoming | 22 January 1992 | Mark Hopkinson | aggravated murder | lethal injection |
Question:
how many states had their last execution take place in 1997?
Answer:
3