Sales at OneAmerica Financial Partners Inc. surged 29 percent in 2011, on top of a 24-percent jump in 2010, the Indianapolis-based life insurer announced Monday.

That sales success has pushed OneAmerica’s total assets to nearly $26 billion, an increase of 7 percent over 2010.

OneAmerica did not release a dollar figure for its sales, but the 29-percent increase would have pushed 2011 sales to nearly $2.2 billion, based on 2010 sales data.

The mutual insurance company will report final sales and net income figures later this spring.

OneAmerica saw its strongest growth in its retirement business, where sales grew 51 percent over 2010. Sales of 401(k) plans to for-profit employers surged 67 percent. And sales of retirement plans to not-for-profit employers rose 31 percent.

OneAmerica also posted double-digit sales growth in sales of voluntary benefits—life, disability and health insurance—through employers, as well as its individual life insurance products.

"We also retained an impressive 95 percent of our business last year, proving we offer a value proposition that not only attracts new customers, but keeps them as we serve them well,” said OneAmerica CEO Dayton Molendorp in a prepared statement.

OneAmerica employs 1,600 workers, with about 1,300 of them at its corporate headquarters in downtown Indianapolis.