What is the level of GDP based on the expenditures in Table 1 below? Table 1-Expenditures Durable Goods Services $ 3,000 6,000 Business purchases of capital goods 800 Exports 600 Imports 650 Non-durable goods 700 Net Added inventory 200 Government transfer 100 payments Purchases of new 550 residential housing + Government purchases 900 Used auto sales 50 $12,750 $12,850 $13,075 $13,875