Stats from the EU also predict that the population will age while the number of people in their 30s could more than halve.
Global ratings agency Fitch has raised its GDP growth forecast for Poland to 4.2 percent in 2019 from the previously expected 4.0 percent.
Poland's economy could expand by as much 4.6 percent in 2019, rather than the 4.2 percent forecast before, analysts of Poland's largest lender by assets PKO BP wrote in their latest quarterly report.
The Organisation for Economic Cooperation and Development (OECD) has upgraded Poland's economic growth forecast to 4.2 percent in 2019 from 4.0 percent expected earlier.
The European Bank for Reconstruction and Development (EBRD) has raised Poland's GDP growth forecast for 2019 to 4.1 pct year on year, up by 0.5 pct., the bank said in a recent report.
The EC Commissioner for Economic and Financial Affairs, Taxation and Customs described on Tuesday the upgrading of Poland's economic growth forecast for 2019 as spectacular and added that the fiscal stimulus, or increased public outlays, were the chief reason.
Global ratings agency Fitch has lowered its forecast of Poland's general government deficit to 1.7 percent from 2.2 percent of the country's GDP in 2019 and upheld, at 2.3 percent, its forecast for 2020, according to data released Friday.
Morgan Stanley's analysts have upgraded Poland's GDP growth forecast for 2018 to 5.1 percent from its earlier 4.9 percent estimate.