This excerpt taken from the BSX 10-K filed Mar 1, 2006.
U.S. Net Sales
In 2005, our U.S. net sales increased by $350 million, or 10 percent, as compared to 2004. The increase primarily related to $1,763 million in sales of our TAXUS stent system for 2005 as compared to $1,570 million for 2004. We launched our TAXUS stent system in the U.S. late in the first quarter of 2004 and estimate that physicians in the U.S. have converted approximately 88 percent of the stents they use in interventional procedures from bare-metal stents to drug-eluting stents as of December 31, 2005, as compared to 85 percent at December 31, 2004. The remainder of the increase in our U.S. net sales related to sales growth of $83 million from our Endosurgery group and $75 million from our Neuromodulation division. This increase in sales was offset by decreased TAXUS stent system sales in the U.S. during the second half of 2005, as compared to the same period in the prior year largely due to a reduction in market share, as well as pricing pressure. During the first three quarters of 2005, we experienced sequential declines in our market share. In the fourth quarter of 2005, our market share stabilized and was relatively consistent with the prior quarter.
In 2004, our U.S. net sales increased by $1,578 million, or 82 percent, as compared to 2003. The increase related primarily to $1,570 million in sales of our TAXUS stent system. Declines in our bare-metal stent revenue by $155 million to $59 million in 2004 partially offset this increase, as physicians continued to convert the stents they use in interventional procedures from bare-metal stents to drug-eluting stents, including our TAXUS stent system. Sales from other products within our Cardiovascular division also increased by $49 million, or five percent, during 2004. The remainder of the increase in our U.S. revenues related to sales growth in each of our other U.S. divisions, including $37 million in sales from our Neuromodulation division.