AUSTRIAN CURRENT SURPLUS GROWS IN FOUR MONTHS Austria's current account surplus grew to 11.0 billion schillings in the first four months this year from 8.2 billion in the same period last year, the National Bank said. In April, the current account recorded a deficit of 300 mln schillings compared with an 800 mln surplus in March and an 800 mln deficit in April, 1986, the bank said in a statement. The trade deficit in the first four months fell to 16.4 billion schillings from 17.5 billion in the same period last year while in April the deficit was 4.1 billion compared with 6.9 billion in March and 3.6 billion in April, 1986.