"Year","Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"
1992,32.5,32.5,32.5,32.7,32.7,32.5,32.6,32.7,32.7,32.6,32.7,32.6
1993,32.7,32.7,32.5,32.7,32.7,32.7,32.8,32.7,32.7,32.8,32.7,32.8
1994,32.8,32.7,32.8,32.8,32.8,32.8,32.8,32.7,32.7,32.8,32.7,32.8
1995,32.7,32.6,32.6,32.7,32.6,32.7,32.6,32.6,32.6,32.6,32.7,32.6
1996,32.4,32.6,32.7,32.6,32.7,32.7,32.6,32.7,32.8,32.7,32.7,32.8
1997,32.7,32.8,32.8,32.8,32.8,32.7,32.8,32.9,32.9,32.9,32.9,32.9
1998,33,32.9,32.8,32.9,33,32.8,32.9,32.9,32.9,32.9,32.9,32.9
1999,32.9,32.9,32.8,32.8,32.8,32.8,32.9,32.9,32.7,32.9,32.8,32.9
2000,32.8,32.8,32.8,32.8,32.8,32.8,32.7,32.8,32.8,32.8,32.8,32.7
2001,32.8,32.7,32.7,32.7,32.7,32.7,32.7,32.7,32.7,32.6,32.6,32.7
2002,32.7,32.7,32.8,32.7,32.8,32.8,32.6,32.7,32.9,,,