Comparative dates on which the Nationals notched their 23rd win, each season:
2012 - 16th May (37th match of season)
2005 - 19th May (41st match)
2010 - 23rd May (45th match)
2008 - 28th May (54th match)
2011 - 31st May (54th match)
2007 - 1st June (55th match)
2006 - 2nd June (55th match)
2009 - 28th June (74th match)