The average nominal net salary stood at RON 1,719 in July, up by RON 32 (1.9 per cent) month-on-month, and the highest levels were registered in the extraction of oil and natural gas sector (RON 4,562), the levels registered in the hotels and restaurants sector being at the opposite end (RON 1,011), the National Statistics Institute (INS) informs. The real salary earning index, representing the ratio between the net nominal salary earning and the consumer price index, stood at 102 per cent month-on-month in July 2014. Compared to October 1990, the real salary earning index stood at 128 per cent, 2.4 percentage points higher than the level registered in June 2014. The INS points out that salary earning fluctuations mainly caused by the handing out of annual bonuses and holiday bonuses (in December and March/April) are registered throughout the year. These bonuses influence the hikes or drops depending on the period in which they are handed out, eventually leading to the diffusion of the monthly salary earning fluctuations at annual level. In the public sector the month-on-month average net salary hikes were registered as follows: public administration (2.2 per cent), health and social assistance (0.4 per cent), as a result of the application of the legal stipulations that came into force on July 1, 2014.