Please, provide a summary of European Central Bank's (ECB) key monetary policy decisions and trends since the beginning of 2016. See the following link for details:

https://www.ecb.europa.eu/mopo/decisions/html/index.en.html

Please, examine and briefly discuss the rationale of the ECB announcements made since 2016:

• What is the direction of changes implemented by the ECB?
• How have these changes influenced macroeconomic situation in Eurozone?
• What have been the opinions of other stakeholders (businesses, borrowers, lenders, etc.) regarding these monetary policy decisions?