CREATE TABLE table_63615 ("Rank" FLOAT, "Country/Region" TEXT, "Expenditures on R&D  ( billions of US$  ,  PPP  ) " FLOAT, "% of GDP PPP" TEXT, "Year" FLOAT)

What is the lowest expenditures on R&D for Poland after 2011?
SELECT MIN("Expenditures on R&D (billions of US$ , PPP )") FROM table_63615 WHERE "Country/Region" = 'poland' AND "Year" > '2011'
SELECT MIN("Expenditures on R&D (billions of US$ , PPP )") FROM "table_63615" WHERE "Country/Region" = 'poland' AND "Year" > '2011'