According to the Russian Longitudinal Monitoring Survey, between 1994 and 2007, the share of the population which paid for medical services increased from 4% to 15% for doctors’ consultation, from 8% to 26% for diagnostic procedures and from 30% to 50% for hospital stays (with a peak of 60% in 2002)." Survey was not conducted in 1997 and 1999. Roughly 50% of patients paid something for hospital stays, although the average size and distribution of the payment is not known (Figure 3.9).