Development of the balance sheet of the Eurosystem (ECB plus participating national central banks). This graph is a successor of previous graphs, dus to my moving from MS Office to LibreOffice. My apologies for the lesser quality: LibreOffice seems to have problems with graphs with a (very) large number of data points.
<a href="//commons.wikimedia.org/wiki/User:MartinD" title="User:MartinD">MartinD</a>
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<span class="int-own-work" lang="en">Own work</span>