// https://a2pcalcs.firebaseapp.com/constants-a2p-JSv3.txt

var lnCAPEnow = 0.38672; 
    // from www.multpl.com as of 1-8-2017; update quarterly, computed as
    // LN( c/median - cubicTrend ) where c is 0.0033 exp-avg 
    
var sRetCAPE = 1.065563;
    // stock return 1896-2015, for period of CAPE analysis
    
var lnCAPEmult = -1.491211E-01; 
    // multiplier in exponential function that estimates return 
    
var lnCAPEbase = 9.575650E-01;  
    // this base is raised to the power y (years-held ) to estimate returns

var lnCAPEconstant = -4.490144E-03; // 9.955199E-01 
    // intercept in regression that predicts CAPE effect from years held

var lnCAPEslope = -1.08972E-01;  
    // Obsolete - slope in regression that predicts CAPE effect from years held

var histReturns = [ 1.068115, 1.023368, 1.029916, 1.015005, 1.000374 ]; 
    // retruns on stocks, 10Y T-bonds, 20Y Corps, 2Y T-notes, 3M T-bills
    // compound returns 1953-2015 from Shiller & FRED; T-Bills from 1934

var inflation = 0.0205173;
    // compound rate from 1871 to 2015, per Shiller

var stockUS = 0.7;
    // fraction of stocks allocated to US vs. global

var bondUS = 0.7;
    // fraction of bonds allocated to US vs. global

var toCBonds = 0.4;
    // fraction in stocks below which 
    // long-bonds switch from treasuries to corporates

var stockLimit = 33;
    // 100*fraction that stocks must exceed before allocating to global stocks

var bondLimit = 33;
    // 100*fraction that bonds must exceed before allocating to global bonds

var medianHome = 190000;

var defaultMedExpHi = 2200;
    // Medigap F deductible in 2017, 
    // www.cms.gov/Medicare/Health-Plans/Medigap/FandJ.html

var defaultMedExpLo = 1863;
    // Reference person over 65, www.bls.gov/cex/tables.htm, healthcare - insurance

var defaultLTCareHi = 86400;
    // Median cost of private room in nursing home,
    // www.genworth.com/dam/Americas/US/PDFs/Consumer/corporate/130568_040115_gnw.pdf
    
var defaultLTCareLo = 32500;
    // from Kaiser Family Foundation, Congressional Budget Office, 
    // U.S. Census, and Social Security: 
    // (a) total out-of-pocket costs for LTSS = $58.9B, 
    // (b) of 44.6M people age 65+, 8.3M qualify for Medicaid, 
    // (c) average life-expectancy at 65 = 20 years; 
    // thus, average 1year expense is $58,900M / 36.3M = $1622, 
    // and lifetime total in constant dollars = $32,452

var forecasterSurvey = 0.022;
    // 2017 1-year outlook from Philly Fed survey of professional forecasters
    // UPDATE EVERY NOVEMBER

var maxCOLA = 0.067;
    // from analysis of historical data. 
    // highest COLA to prevent depletion in a long retirement.

    // next 3 from www.socialsecurity.gov/OACT/COLA/piaformula.html for 2016
    // UPDATE EVERY DECEMBER

var SSbend1 = [ 711, 744, 761, 749, 767, 791, 816, 826, 856 ];

var SSbend2 = [ 4288, 4283, 4586, 4517, 4624, 4768, 4917, 4980, 5157 ];

var SSaimeDivisor = 420; // max 35 years * 12 months 

var SSmaxTaxEarn = 118500;
    // max income subject to SS payroll tax
    // from http://www.socialsecurity.gov/planners/maxtax.htm for 2016