A list of the top 10 countries by average invoice size. List country name and average invoice size.
SELECT billing_country ,  AVG(total) FROM invoices GROUP BY billing_country ORDER BY AVG(total) DESC LIMIT 10;
SELECT billing_country ,  AVG(total) FROM invoices GROUP BY billing_country ORDER BY AVG(total) DESC LIMIT 10;
[{'billing_country': 'Chile', 'AVG(total)': 6.659999999999999}, {'billing_country': 'Ireland', 'AVG(total)': 6.517142857142857}, {'billing_country': 'Hungary', 'AVG(total)': 6.517142857142857}, {'billing_country': 'Czech Republic', 'AVG(total)': 6.445714285714287}, {'billing_country': 'Austria', 'AVG(total)': 6.088571428571428}, {'billing_country': 'Finland', 'AVG(total)': 5.945714285714287}, {'billing_country': 'Netherlands', 'AVG(total)': 5.8028571428571425}, {'billing_country': 'India', 'AVG(total)': 5.789230769230769}, {'billing_country': 'USA', 'AVG(total)': 5.747912087912091}, {'billing_country': 'Norway', 'AVG(total)': 5.659999999999999}]