pre_text: 25. Loans and other borrowings continued Loans and other borrowings are analysed as follows: a Includes collateral received on swaps of £638m (2017/18: £525m, 2016/17: £702m). The carrying values disclosed in the above table reflect balances at amortised cost adjusted for accrued interest and fair value adjustments to the relevant loans or borrowings. These do not reflect the final principal repayments that will arise after taking account of the relevant derivatives in hedging relationships which are reflected in the table below. Apart from finance leases, all borrowings as at 31 March 2019, 2018 and 2017 were unsecured.
table: 2019 2018 2017
table: At 31 March £m £m £m
table: Current liabilities
table: Listed bonds 1,367 1,702 1,539
table: Finance leases 16 18 15
table: Bank loans – – 352
table: Other loans and bank overdrafts a 717 561 726
table: Total current liabilities 2,100 2,281 2,632
table: Non-current liabilities
table: Listed bonds 14,586 11,789 9,866
table: Finance leases 190 205 214
table: Other loans – – 1
table: Total non-current liabilities 14,776 11,994 10,081
table: Total 16,876 14,275 12,713
question: Analyse this data from a financial earnings document. What is the change in listed bonds from 2018 to 2019?