MOSCOW (REUTER) - Russian Prime Minister Viktor Chernomyrdin, stressing the need to reverse an economic slump, said on Monday he expected Russia to win up to $ 20 billion in foreign investment by the year 2000, Itar-Tass news agency said. The figure included loans from the World Bank and foreign governments, direct investment and oil industry investments, Chernomyrdin told a foreign investment conference. It quoted him as saying the most pressing economic goal for Russia was to achieve economic growth this year. Gross domestic product shrank six percent in 1996 but foreign investment flows into Russia had begun to improve after President Boris Yeltsin was re-elected in July 1996. Chernomyrdin said Russia would continue with reforms such as decreasing taxes to improve the investment climate. A major overhaul of Russia`s tax system is under review by the Russian Duma lower house of parliament, which on Friday passed the 1997 budget in a fourth and final reading. Chernomyrdin also said the government would begin industrial reform to improve management and bring accounting standards to world levels. Russian Economy Ministry data showed that foreign investment over the first nine months of 1996 was $ 4.5 billion, almost three times 1995 levels, Interfax said. Economy Minister Yevgeny Yasin said last week 1997 foreign investment, not including flows to Treasury bills, would be $ 4-5 billion and Interfax quoted a ministry official as saying total foreign investment would be about $ 6-7 billion.