Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
What is the average expenditures on R&D for Croatia after 2007?

### Inputs:
table_name: table, columns: ['Rank', 'Country/Region', 'Expenditures on R&D (billions of US$ , PPP )', '% of GDP PPP', 'Year']

### Response:
SELECT AVG Expenditures on R&D (billions of US$ , PPP ) FROM table WHERE Country/Region = croatia AND Year > 2007