Preliminary data for 2003 indicated that 27.6% of all births in the United States resulted from cesarean deliveries,an increase of 6% from 2002 and the highest percentage ever reported in the United States. After declines during 1989-1996, the total cesarean rate and the primary cesarean rate (i.e., or percentage of cesareans among women with no preceding cesarean delivery; 19.1% in 2003) have increased each year. In addition,the rate of VBAC, which had increased during 1989-1996, or decreased by 63% to 10.6% in 2003. Among women with preceding cesarean deliveries,the likelihood that subsequent deliveries would be cesarean was approximately 90% in 2003.
Source: cdc.gov