could volcanos be the source of the carbon dioxide and if so is there more volcanic activity than 10-15 years ago?

Question: could volcanos be the source of the carbon dioxide and if so is there more volcanic activity than 10-15 years ago?
- Keywords:
  carbon dioxide,
  volcanic,
  volcanos
Asked by 346cmtm24 to Aileen on 7 Mar 2018.
- Aileen Baird answered on 7 Mar 2018:
  
  Volcanoes are a source of carbon dioxide, but other than that I’m afraid I don’t know that much about volcanoes! I expect that because volcanoes are very old and around for a very long time that 10-15 years wouldn’t be a long enough time period to see changes in volcanic activity.
  
  You need to find a volcanologist to ask!

Question: could volcanos be the source of the carbon dioxide and if so is there more volcanic activity than 10-15 years ago?