“Self-finance” may not be the best term to use, given that their asset growth of $90bn (from $40bn in 2013 to $131bn in 2017) is mostly coming from the increase in liabilities (equity has increased less than $20bn, from $10bn to $28bn).

Long-term debt was $3bn in 2013, increasing to $8bn in 2014 and $25bn in 2017. Capital leases have also gradually increased from $2bn in 2013 to $8bn in 2016 and $13bn in 2017.