By the way, swap rates also fell in this instance as markets expected the ECB to ease its monetary policy stance further. But while OIS rates cheapened again as investors understood that policy rates would remain unchanged, German sovereign bond yields never really recovered from the Brexit-induced fall. You can see this on slide 4.
As you know, the lats is pegged to the SDR basket of currencies, the IMF unit of settlement - the Bank of Latvia’s official exchange rate between the lats and the SDR is 0.7997:1. It has remained unchanged since the beginning of the peg in February 1994.