CREATE TABLE table_name_32 (_ppp__ VARCHAR2, d__billions_of_us$_ VARCHAR2, expenditures_on_r NUMBER, country_region VARCHAR2, year VARCHAR2)

What is the average expenditures on R&D for Croatia after 2007?
SELECT AVG(expenditures_on_r) & d__billions_of_us$_, _ppp__ FROM table_name_32 WHERE country_region = "croatia" AND year > 2007
SELECT AVG("expenditures_on_r") & "d__billions_of_us$_", "_ppp__" FROM "table_name_32" WHERE "country_region" = "croatia" AND "year" > 2007