Quarter	Percent
1991-06-30	86.1
1991-09-30	159
1991-12-31	123.2
1992-03-31	171.6
1992-06-30	144.6
1992-09-30	126.8
1992-12-31	191.6
1993-03-31	191
1993-06-30	194.3
1993-09-30	186.7
1993-12-31	140.2
1994-03-31	106.5
1994-06-30	93.8
1994-09-30	74.3
1994-12-31	48.3
1995-03-31	41.9
1995-06-30	38.4
1995-09-30	40.5
1995-12-31	35.5
1996-03-31	31.7
1996-06-30	29.6
1996-09-30	29
1996-12-31	33.4
1997-03-31	51.4
1997-06-30	66.9
1997-09-30	79.7
1997-12-31	66.1
1998-03-31	54.8
1998-06-30	49
1998-09-30	36.7
1998-12-31	67.3
1999-03-31	52.4
1999-06-30	49.7
1999-09-30	59.4
1999-12-31	41.6
2000-03-31	46.9
2000-06-30	35.2
2000-09-30	35.4
2000-12-31	40.5
2001-03-31	36.7
2001-06-30	43.7
2001-09-30	33.1
2001-12-31	25.5
2002-03-31	22
2002-06-30	18.4
2002-09-30	17.2
2002-12-31	17.1