S&P Global Ratings highlighted global issuance of sukuk in the first half of 2017 was good, but expects it to moderate in 2018. S&P head of Islamic finance Mohamed Damak said 2018 was less certain, as the large issuances of last year are not expected to repeat. Among some of the downside trends relating to Islamic finance includes subdued economic performance in Islamic finance core countries, primarily due to low oil prices. The long-standing debate about standardisation will continue to hinder the industry. S&P's report is entitled "Islamic Finance 2018: Slow Growth Is The New Normal" and the rating agency expects the industry to lose momentum in 2018. The contribution of Islamic finance has so far been limited by the industry's relatively small size and structure.