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