There are about 500 active volcanoes thoughout the world. In an average year approximately 50 of these erupt.
source: [link to www.n-d-a.org]

As of April 17. just 4 months into 2012 there have been 49 volcano eruptions.
source: [link to theextinctionprotocol.wordpress.com]

49th volcano erupts in 2012: Ecuador’s Sangay volcano unleashes 2 km ash cloud
Posted on April 17, 2012
April 17, 2012 – ECUADOR - During an over-flight on 13 April, an explosion from Sangay volcano was observed at 08:25 local time. It generated an ash and steam column of 2 km above the summit crater. A new vent was detected; both on visible and thermal images, located next to the active dome on the SE flank (Ñuñurqu). The activity in this area has intensified since October, when the last aerial survey had taken place. Extensive lava flows are descending on the SE flank of the dome and reaching the base of the cone. Strong fumarolic activity was seen on the SE flank of the dome and on the S flank of the central crater. -Volcano Discovery

This bears the need for monitoring. Post all information here.