On a year-to-date basis, ETF assets increased $185.8 billion, or 44%, an ICI news release said.
Assets in domestic equity ETFs increased $103.1 billion between December 2006 and December 2007 and global equity ETFs assets rose $68.5 billion during this period.
Assets of bond index funds were $34.6 billion and hybrid index funds were $119 million in December.
During December, the value of all ETF shares issued exceeded that of shares redeemed by $44.52 billion.
The detailed December data can be found at http://www.ici.org/stats/etf/etfs_12_07.html while general information about the ICI ETF data is available here.