pre_text: Note 9: Long-Term Debt The Company's long-term debt consists of the following (annualized interest rates, dollars in millions): (1) Interest is payable on June 1 and December 1 of each year at 1.00% annually. (2) Interest is payable on April 15 and October 15 of each year at 1.625% annually. (3) Consists of U.S. real estate mortgages, term loans, revolving lines of credit, notes payable and other facilities at certain international locations where interest is payable weekly, monthly or quarterly, with interest rates between 1.00% and 4.00% and maturity dates between 2019 and 2022. (4) Debt discount of $20.4 million and $41.6 million for the 1.00% Notes, $71.8 million and $88.5 million for the 1.625% Notes and $10.5 million and $9.3 million for the Term Loan "B" Facility, in each case as of December 31, 2019 and December 31, 2018, respectively. (5) Debt issuance costs of $2.8 million and $5.8 million for the 1.00% Notes, $6.9 million and $8.5 million for the 1.625% Notes and $24.3 million and $19.2 million for the Term Loan "B" Facility, in each case as of December 31, 2019 and December 31, 2018, respectively.
table: As of
table: December 31, 2019 December 31, 2018
table: Amended Credit Agreement:  
table: Revolving Credit Facility due 2024, interest payable monthly at3 .30% and 3.77%, respectively $800.0 $400.0
table: Term Loan “B” Facility due 2026, interest payable monthly at3 .80% and 4.27%, respectively 1,630.9 1,134.5
table: 1.00% Notes due 2020 (1) 690.0 690.0
table: 1.625% Notes due 2023 (2) 575.0 575.0
table: Other long-term debt (3) 53.3 139.5
table: Gross long-term debt, including current maturities 3,749.2 2,939.0
table: Less: Debt discount (4) (102.7) (139.4)
table: Less: Debt issuance costs (5) (34.0) (33.5)
table: Net long-term debt, including current maturities 3,612.5 2,766.1
table: Less: Current maturities (736.0) (138.5)
table:  Net long-term debt $2,876.5 $2,627.6
question: Analyse this data from a financial earnings document. What is the change in Gross long-term debt, including current maturities from December 31, 2018 to 2019?