Cheaper primary articles, including food and non-food items, and cooking gas pushed inflation down to 5.11% for the week ended March 19.The point-to-point inflation based on the wholesale price index (WPI) fell by 0.12% from the previous week's level of 5.23% despite costlier vegetables. It stood at 4.53% in the year-ago period.The WPI, however, stood unchanged at the previous week's level of 189.1 points with heavy-weighted manufactured items becoming costlier. It was 179.9 points in the year-ago period.The government revised upwards inflation to 5.43% during the week ended January 22 as against the provisional estimate of 5.37%.WPI stood corrected at 188.5 points during the third week of January as against the provisional figure of 188.4 points.