Read the following text carefully :
“A country’s total National Income (NI) at the end of the year is ₹ 80,000 crore. During the same year, the Gross Domestic Product (GDP) increased by ₹ 10,000 crore. The depreciation on capital goods was ₹ 2,000 crore and National savings at the end of year is ₹ 15,000 crore. Additionally, country invested ₹ 8,000 crore in new capital goods industries.”
In the light of above text, categorise the items as ‘stock’ or ‘flow’ variables with valid arguments.