CREATE TABLE table_63614 ("Rank" FLOAT, "Country/Region" CLOB, "Expenditures on R&D  ( billions of US$  ,  PPP  ) " FLOAT, "% of GDP PPP" CLOB, "Year" FLOAT)

What is the average expenditures on R&D for Croatia after 2007?
SELECT AVG("Expenditures on R&D (billions of US$ , PPP )") FROM table_63614 WHERE "Country/Region" = 'croatia' AND "Year" > '2007'
SELECT AVG("Expenditures on R&D (billions of US$ , PPP )") FROM "table_63614" WHERE "Country/Region" = 'croatia' AND "Year" > '2007'