Scale Marker 1, line at 98. Scale marker text: Scale marker
Line 1, Data A.
Point 1, 1970 is 51.
Point 2, is 55.8.
Point 3, is 48.5.
Point 4, is 37.
Point 5, is 42.4.
Point 6, 1975 is 54.3.
Point 7, is 59.3.
Point 8, is 70.4.
Point 9, is 69.2.
Point 10, is 83.8.
Point 11, 1980 is 94.7.
Point 12, is 110.3.
Point 13, is 94.9.
Point 14, is 87.7.
Point 15, is 92.6.
Point 16, 1985 is 71.7.
Point 17, is 61.5.
Point 18, is 50.5.
Point 19, is 49.1.
Point 20, is 50.7.
Point 21, 1990 is 49.1.
Point 22, is 49.6.
Point 23, is 42.9.
Point 24, is 41.3.
Point 25, is 47.5.
Point 26, 1995 is 50.5.
Point 27, is 45.8.
Point 28, is 49.6.
Point 29, is 53.9.
Point 30, is 54.
Point 31, 2000 is 54.5.
Point 32, is 50.6.
Point 33, is 58.
Point 34, is 43.7.
Point 35, is 40.
Point 36, 2005 is 42.
Point 37, is 57.
Point 38, is 48.3.
Point 39, 2008f is 43.4.