Has the weight of the European Union (EU-27, without the United Kingdom) in the global economy declined?

We seek to determine whether the weight of the EU (27) in the global economy has declined by examining: The GDP of the EU-27; The size of the external trade of the EU-27; The weight of the euro in global foreign exchange reserves; R&D and patents filed in the EU-27. We then see that all these indicators show a significant decline in the weight of the EU-27 in the global economy, which can be explained by low levels of innovation, productivity gains and potential growth, and also the segmentation of financial markets .