The latest ICC Global Trade Finance Survey can be downloaded from the following link Here
Highlights from the SWIFT 2016 statistics, that can be found on pages 88 - 99 are:
Volume of MT700 messages was down 2.81% in 2016
Total number of letters of credit sent by MT700 in 2016 was 4,364,457 (of which 73% were issued by banks located in Asia)
The average value of a letter of credit was USD463,000
The percentage of letters of credit by type of availability were:
Negotiation 73.2%, Payment 11%, Deferred Payment 8.7%, Acceptance 6.8% and Mixed Payment 0.3%
Confirmation instructions:
Without 88.8%, Confirm 7.4% and May Add 3.8%