Bivariate Fit of Number of Cases By Year 90000 80000 70000 60000 50000 Number of Cases 40000 30000 20000 10000 0 1950 1960 1970 1980 1990 2000 2010 2020 Year -Linear Fit Linear Fit Number of Cases = 1861725.3 - 922.34489*Year Summary of Fit R.Square 0.855666 RSquare Adj 0.853411 Root Mean Square Error 7328434 Mean of Response 30409.55 Observations (or Sum Wgts) 66 Analysis of Variance Sum of Source DF Squares Mean Square F Ratio Model 1 2.0377e+10 2.038e+10 379.4156 Error 64 3437180671 53705948 Prob > F C. Total 65 2.3814e+10 <.0001 parameter estimates term estimate std error t ratio prob> |t| Intercept 18617253 94021.17 19.80 <.0001 year>