What was the increase / (decrease) in Total borrowings from 2018 to 2019?
{"US dollar-denominated long-term debt 1": {"2019": 8300.0, "2018": 6050.0}, "Hedged with debt derivatives": {"2019": 8300.0, "2018": 6050.0}, "Hedged exchange rate": {"2019": 1.1932, "2018": 1.1438}, "Percent hedged2": {"2019": 100.0, "2018": 100.0}, "Amount of borrowings at fixed rates 3 -- Total borrowings": {"2019": 17496.0, "2018": 15320.0}, "Amount of borrowings at fixed rates 3 -- Total borrowings at fixed rates": {"2019": 15254.0, "2018": 13070.0}, "Amount of borrowings at fixed rates 3 -- Percent of borrowings at fixed rates": {"2019": 87.2, "2018": 85.3}, "Amount of borrowings at fixed rates 3 -- Weighted average interest rate on borrowings": {"2019": 4.3, "2018": 4.45}, "Amount of borrowings at fixed rates 3 -- Weighted average term to maturity": {"2019": 14.1, "2018": 10.7}}
total_borrowings_2019 = df["Amount of borrowings at fixed rates 3 -- Total borrowings"]["2019"]
total_borrowings_2018 = df["Amount of borrowings at fixed rates 3 -- Total borrowings"]["2018"]
answer = total_borrowings_2019 - total_borrowings_2018