You might also want to look at the cuts the EU have had to make to the EU budget and check to see how that will affect some EU countries in future?
Some of the schemes funded from the EU budget, such as the CAP for farming subsidies which gets 41% of the entire EU budget and the cohesion policy, are fully funded by the EU budget. Whereas things like Research, are only partly funded from the EU budget and the rest is paid by the county.
Basically, a few EU countires end up paying for everything themselves. These put in more to the EU budget than their county gets back in what the EU calls "EU funding" and the rest of their money is given to poorer EU countries, who put in less than they take out. In this link to a German magazine, there is a list of which countries give to the EU budget and who takes.
http://www.spiegel.de/international/europe/brexit-to-cost-european-union-billions-a-1111724.htmlAlthough they initially thought the EU budget would be 12 billion short due to the loss of the UK's money, experts now think it is 15 billion. At a recent budget meeting, the richer countries have refused to make up for that loss by paying more, because they said their economies will be taking a loss with Brexit.
The EU has already announced cuts to the Cohesion policy, which at present Poland is the biggest taker, and to the CAP, which France is, and always has been, the biggest taker.
https://www.reuters.com/article/uk-eu-budget-agriculture/eu-proposes-to-cut-farm-subsidies-france-says-unacceptable-idUSKBN1I31WWThat cut in the CAP and Cohesion policy, will mainly affect the eastern and southern EU countries. Plus, because the EU wants money to stop immigration, they have suggested that they will tax the EU countries to get that funding.
It's worth having a look to see how the cuts will affect these countries spending.