File talk:Age differences for spouses (USA).png

question about the graph
What is the meaning of the numbers with commas in the graph? For example, next to &#8220;within 1 year&#8221; it says &#8220;31,9.&#8221; It would appear the 31 is a percentage. What is the 9? Likewise, why is there a &#8220;,0&#8221; after every number on the y-axis of the graph? 71.178.188.29 (talk) 05:57, 12 February 2014 (UTC)