Given the task definition and input, reply with output. In this task you are given a list of numbers and you need to find the average of each two consecutive values. The average of two numbers a and b is calculated as: (a + b) /2. The output should be a list of the averages of each two consecutive values. A list is presented with two brackets and comma-separated values, like: [1,2,3].

[99, 38, 77, -90, -82, 70, 97, -75, 12, -72, -5, -36]

[68.5, 57.5, -6.5, -86.0, -6.0, 83.5, 11.0, -31.5, -30.0, -38.5, -20.5]