What is the size for the Federal Reserves Balance Sheet?

How much money by banks are being held on reserve at the Federal Reserve?

What was it prior to 2007? What has been the growth in the Money Supply since 2007?

Has the Fed hit Gross Domestic Product (GDP), Employment (Unemployment), and Inflation Targets (Core Consumer Price Index - CPI)?

If we were to fall into a recession, would the Fed use Negative Interest Rate Policy (NIRP)?

What would be the impact on the Economy? Asset Prices? Savers? Investors? Businesses?