LONDON (Reuters) - Global debt rose to a new record high of nearly $300 trillion in the second quarter, but the debt-to-GDP ratio declined for the first time since the start of the pandemic as economic growth rebounded, the Institute of International Finance (IIF) said on Tuesday.Total debt levels, which include government, household and corporate and bank debt, rose $4.8 trillion to $296 trillion at the end of June, after a slight decline in the first quarter, to stand $36 trillion above pre-pandemic levels. “If the borrowing continues at this pace, we expect global debt to exceed $300 trillion,” said Emre Tiftik, IIF’s director of sustainability research. The rise in debt levels was the sharpest among emerging markets, with total debt rising $3.5 trillion in the second quarter from the preceding three months to reach almost $92 trillion. Graphic: Global debt fast approaching $300 trillion: In a positive sign for the debt outlook, the IIF reported a decline in the global debt-to-GDP ratio for the first time since the outbreak of the coronavirus crisis. Debt as a share of gross domestic product fell to around 353% in the second quarter, from a record high of 362% in the first three months of this year. The IIF said that of the 61 countries it monitored, 51 recorded a decline in debt-to-GDP levels, mostly on the back of a strong rebound in economic activity. But it added that in many cases the recovery had not been strong enough to push debt ratios back below pre-pandemic levels. According to the IIF, total debt-to-GDP ratios excluding the financial sector are below pre-pandemic levels in just five countries: Mexico, Argentina, Denmark, Ireland, and Lebanon.China has seen a steeper rise in its debt levels compared with other countries, while emerging-market debt excluding China rose to a fresh record high at $36 trillion in the second quarter, driven by a rise in government borrowing. The IIF noted that after a slight decline in the first quarter, debt among developed economies -- especially the euro area -- rose again in the second quarter. In the United states, debt accumulation of around $490 billion was the slowest since the start of the pandemic, although household debt increased at a record pace. Globally, household debt rose by $1.5 trillion in the first six months of this year to $55 trillion. The IIF noted that almost a third of the countries in its study saw an increase in household debt in the first half. “The rise in household debt has been in line with rising house prices in almost every major economy in the world,” said the IIF’s Tiftik. Total sustainable debt issuance meanwhile has surpassed $800 billion year to date, the IIF said, with global issuance projected to reach $1.2 trillion in 2021.