No, the slogan is not trademarked!
Maybe it was some years ago trademarked, but not know.

you can look it here

http://www.copyright.gov/

http://cocatalog.loc.gov/cgi-bin/Pwebrecon.cgi?SAB1=your+money+your+way&BOOL1=as+a+phrase&FLD1=Keyword+Anywhere+%28GKEY%29+%28GKEY%29&GRP1=AND+with+next+set&SAB2=&BOOL2=as+a+phrase&FLD2=Keyword+Anywhere+%28GKEY%29+%28GKEY%29&PID=9_HrZNWCQwJG7qeSwTvbRNABRbiyq&SEQ=20140814150830&CNT=25&HIST=1