Question: What is the average expenditures on R&D for croatia after 2007?
SQL: SELECT AVG("Expenditures on R&D (billions of US$ , PPP )") FROM "2-18492011-1" WHERE "Country/Region" = 'croatia' AND "Year" > 2007.0;

Question: What is the lowest expenditures on R&D for poland after 2011?
SQL: SELECT MIN("Expenditures on R&D (billions of US$ , PPP )") FROM "2-18492011-1" WHERE "Country/Region" = 'poland' AND "Year" > 2011.0;