Show me the price trends in a graph.

Below is an approximate ASCII chart reflecting the broad numerical range shown in the context (“160 150140130120110100 90807060”). No specific timeline breakdown was provided, so this illustration shows the index decreasing from 160 down to 60:

160 | █
150 | █
140 | █
130 | █
120 | █
110 | █
100 | █
90 | █
80 | █
70 | █
60 | █
---------------------
1 2 3 4 5

This is a simplified demonstration. No specific quarters or years were given in the information above, so this chart is intended only as a basic visual guide.