The European Central Bank has again opted not to resume its programme of buying up bonds of eurozone nations, data suggested Monday, despite widespread speculation that the bank may do so soon. According to data published on the bank\'s website, it did not buy any sovereign bonds last week for the 23rd week in a row. The ECB launched its bond-buying blitz under the Securities Market Programme (SMP) in 2010 to help debt-wracked eurozone countries that were finding it difficult to drum up financing in capital markets. But the SMP has lain dormant since February following the ECB\'s moves to pump more than one trillion euros ($1.23 trillion) into the banking system via three-year funding operations in December and February. After one of the most hotly anticipated ECB policy meetings in recent history earlier this month, ECB chief Mario Draghi said the central bank \"may\" resume bond purchases, but it was primarily up to governments to solve the long-running debt crisis. SMP was controversial from the start, with critics saying the ECB was overstepping its mandate in buying up sovereign bonds on the secondary market. Between January and August 2011, the purchases dried up, but the ECB resumed the programme when renewed strains pushed Italian and Spanish borrowing rates to unsustainable levels. The ECB has so far accumulated 211.5 billion euros in bonds from Greece Ireland, Portugal, Italy and Spain as part of the programme. At one point, purchases reached as much as 22 billion euros in a single week.