nevertheless , this balancing of prices will have to be considered in its dynamic evolution , by further allowing the u.s. dollar 's current exchange rate to fluctuate in keeping with the rate of inflation -lrb- bucharest rompres in english 0805 gmt 30 may 94 -rrb- hard currency reserves : according to figures released by the national bank , romania 's hard currency reserves increased from $ 20 million to $ 600 million within five months .