Investments in machinery and equipment, including transport vehicles, dropped 13.1% on the year to RON28.77 billion last year, while new construction works were down 9.4% to RON31.96 billion, the data showed.
Other investments increased 3.9% on the year to RON7.13 billion.
Broken down by activity, net investment in industry amounted to 41.7% of total investment in 2013, followed by investment in commerce and services (38.1%), constructions (13.7%) and agriculture (4.8%).
Net investment in other sectors of the Romanian economy stood at 1.7% of the overall investment last year.
In the fourth quarter alone, net investment in the Romanian economy fell 15.4% from the year-earlier period, to RON22.36 billion.
The INS data include financial results from around 23,000 economic and social operators with 50 or more staff. The maximum admitted margin of error is plus/minus 3%. (EUR1=RON4.5196)