  
<prompt> Percentage of live births in the five years preceding the survey delivered by caesarean section
  
 [[1990, 5.6], [1997, 10.5], [2002, 16], [2007, 18.5], [2012, 28.5]] 
 <response> the percentage of births delivered by C-section increased significantly from 5.6% in 1990 to 28.0% in 2012 Since 2002 the percentage of C-section deliveries has exceeded the WHO recommendation, suggesting that many of these C-sections may not be medically indicated.  