pre_text: 24. Cash and cash equivalents Significant accounting policies that apply to cash and cash equivalents Cash and cash equivalents comprise cash in hand and current balances with banks and similar institutions, which are readily convertible to cash and are subject to insignificant risk of changes in value and have an original maturity of three months or less. All are held at amortised cost on the balance sheet, equating to fair value. For the purpose of the consolidated cash flow statement, cash and cash equivalents are as defined above net of outstanding bank overdrafts. Bank overdrafts are included within the current element of loans and other borrowings (note 25). IFRS 9 was applied for the first time on 1 April 2018 and introduces new classifications for financial instruments. Cash and cash equivalents were classified as loans and receivables under IAS 39, and are now classified as financial assets held at amortised cost under IFRS 9. This has not had an impact on the accounting for these instruments, or on their carrying amounts. Cash and cash equivalents include restricted cash of £44m (2017/18: £32m, 2016/17: £43m), of which £40m (2017/18: £29m, 2016/17: £41m) was held in countries where local capital or exchange controls currently prevent us from accessing cash balances. The remaining balance of £4m (2017/18: £3m, 2016/17: £2m) was held in escrow accounts, or in commercial arrangements akin to escrow.
table: 2019 2018 2017
table: At 31 March £m £m £m
table: Cash at bank and in hand 495 446 469
table: Cash equivalents
table: US deposits 3 26 32
table: UK deposits 1,132 31 1
table: Other deposits 36 25 26
table: Total cash equivalents 1,171 82 59
table: Total cash and cash equivalents 1,666 528 528
table: Bank overdrafts (note25) (72) (29) (17)
table: Cash and cash equivalents per the cash flow statement 1,594 499 511
question: Analyse this data from a financial earnings document. What is the average US deposits for 2017-2019?