Age	Median Rate	Age Difference	Correlation Coefficients
Age	Median Rate	Age Difference	1983-87	1988-92
30	0.5	40 - 30	0.771	0.665
40	2.7	50 - 40	0.899	0.886
50	9.6	60 - 70	0.865	0.854
60	22.4	70 - 60	0.789	0.779
70	39.6	80 - 70	0.458	0.339
80	47.5