What percentage of the total non-committed credit facilities available is classified as net available? 
{"Committed credit facilities -- Unsecured revolving and expansion credit facilities(1)(2)": {"TOTAL AVAILABLE": 4000, "DRAWN": "\u2013", "LETTERS OF CREDIT": "\u2013", "COMMERCIAL PAPER OUTSTANDING": 1951, "NET AVAILABLE": 2049}, "Committed credit facilities -- Other": {"TOTAL AVAILABLE": 106, "DRAWN": "\u2013", "LETTERS OF CREDIT": 106, "COMMERCIAL PAPER OUTSTANDING": "\u2013", "NET AVAILABLE": "\u2013"}, "Committed credit facilities -- Total committed credit facilities": {"TOTAL AVAILABLE": 4106, "DRAWN": "\u2013", "LETTERS OF CREDIT": 106, "COMMERCIAL PAPER OUTSTANDING": 1951, "NET AVAILABLE": 2049}, "Committed credit facilities -- Total non-committed credit facilities": {"TOTAL AVAILABLE": 1939, "DRAWN": "\u2013", "LETTERS OF CREDIT": 1059, "COMMERCIAL PAPER OUTSTANDING": "\u2013", "NET AVAILABLE": 880}, "Committed credit facilities -- Total committed and non-committed credit facilities": {"TOTAL AVAILABLE": 6045, "DRAWN": "\u2013", "LETTERS OF CREDIT": 1165, "COMMERCIAL PAPER OUTSTANDING": 1951, "NET AVAILABLE": 2929}}
net_available = df["Committed credit facilities -- Total non-committed credit facilities"]["NET AVAILABLE"]
total_available = df["Committed credit facilities -- Total non-committed credit facilities"]["TOTAL AVAILABLE"]
answer = net_available / total_available * 100.0