TOKYO, Jan 19 : Most Japanese households expect prices to keep rising for the next few years, a central bank survey showed on Monday, reinforcing expectations the country was seeing conditions fall into place for further increases in still-low interest rates. The ratio of households who expect prices to rise a year from now stood at 86.0 per cent, a Bank of Japan survey for December showed, compared with 88.0 per cent three months earlier. On average, households expect prices to rise 11.6 per