1st quarter 2nd Quarter 3rd Quarter 4th Quarter
1997 23.0 9.4 8.4 16.4
1998 23.6 11.3 8.6 14.6
1999 22.8 11.2 9.4 13.1
2000 19.3 11.7 8.6 15.6
2001 21.7 15.5 11.0 12.8