pre_text: Disaggregated Revenue The Company has disaggregated revenue from contracts with customers into categories which depict how the nature, amount, timing and uncertainty of revenue and cash flows are affected by economic factors. Consequently, the disaggregation below is based on contract type. Since the terms within these contract types are generally standard in nature, the Company does not believe that further disaggregation would result in increased insight into the economic factors impacting revenue and cash flows. The following table shows the Company's shipping revenues disaggregated by nature of the charter arrangement for the years ended December 31, 2019 and 2018: (1) Voyage charter revenues include approximately $10,152 and $7,600 of revenue related to short-term time charter contracts for the years ended December 31, 2019 and 2018, respectively.
table: Years Ended December 31,
table: 2019 2018
table: Time and bareboat charter revenues $263,683 $213,923
table: Voyage charter revenues(1) 33,275 83,542
table: Contracts of affreightment revenues 58,589 68,698
table: Total shipping revenues $355,547 $366,163
question: Analyse this data from a financial earnings document. What is the change in Time and bareboat charter revenues from Years Ended December 31, 2018 to 2019?