By Suzanne McGee June 14 (Reuters) - Investors are pouring money into bond-focused U.S. exchange traded funds, and some industry participants believe inflows could hit records in 2024 if the current pace continues. U.S. bond ETFs have taken in a net $109 billion this year as of Thursday, data from Morningstar Direct showed. Flows into the category could total a record $250 billion this year, beating the record of $210 billion set in 2020, Morningstar said. While bond ETFs make up less than 18% of the entire ETF market based...