Economic and fiscal policy minister Akira Amari said Saturday the government will step up economic recovery efforts so that the benchmark Nikkei index jumps an additional 17 percent to 13,000 points by the end of March.

"It will be important to show our mettle and see the Nikkei reach the 13,000 mark by the end of the fiscal year (March 31)," Amari said in a speech.

The Nikkei 225 stock average, which last week climbed to its highest level since September 2008, finished at 11,153.16 on Friday.

"We want to continue taking (new) steps to help stock prices rise" further, Amari stressed, referring to the core policies of the Liberal Democratic Party administration — the promotion of bold monetary easing, fiscal spending and greater private sector investment.

Amari said the Nikkei's recent surge translates into combined share appraisal gains of some ¥38 trillion among domestic corporations, including financial institutions.

The key index started rallying from around 8,600 points in mid-November when then-Prime Minister Yoshihiko Noda decided to hold a general election Dec. 16 that saw his ruling Democratic Party of Japan trounced by the LDP. Share prices have risen largely in response to the yen's depreciation against other major currencies on expectations for aggressive monetary easing measures by the Bank of Japan since the LDP's return to power.