**Rev17c:**
1. Updated Expense Ratios (ERs) with latest known values, e.g. latest reductions Vanguard announced in Apr-18 and more

=> Changed ERs: VTSMX 0.14, VIVAX/VIGRX/VIMSX/NAESX/VGTSX 0.17, VFSVX 0.25, VWNDX 0.31, VGENX/VGHCX 0.38, VGPMX 0.36, VWNFX 0.34, VTIBX 0.13, VTWSX 0.19, VDAIX 0.15, EFV 0.39

2. Replaced the Emerging Markets pre-1988 numbers by IFCG EM data series, from Credit Suisse Global Investment Returns Yearbook 2010, starting in 1976

3. Replaced the Int'l Small pre-1995 numbers by IIA Int'l Small data series (eliminating the dependency on DFA data), starting in 1975

4. Improved the dynamic title for portfolio cycles comparison chart, adding the metric's name to the title

**Rev17b:**
1a. Updated inflation from BLS with finalized 2017 number (2.11%)

1b. Updated historical data series S&P500(h), IT Bonds(h), T-Bills(h) + Canadian series (Data_Misc) with finalized 2017 numbers

1c. Removed US Home Price Index data series in Data_Misc (starting Feb-18, access to such data is more constrained by S&P Core Logic)

2. Added new Vanguard Total World Stock (VTWSX) data series - extended with MSCI World and FTSE World back to 1970

3. Added new SEC Yield data series in Data_Misc (most starting from 1990): VBMFX, VFITX, VWSTX, VWITX, VWLTX

4. Added a 'pie chart' representation of the asset allocation of the portfolio under study in Analyze_Portfolio

5. Extended the portfolio cycles comparison chart to support standard deviation, Sharpe ratio and correlation metrics (e.g. against US, international, benchmark portfolio)

6. Added a new risk ratios comparison chart in Compare_Portfolios

**Rev17a:**
1. Spreadsheet updated for 2017 returns and latest Expense Ratios (ER)

2. Inflation and some historical returns 2017 are only an educated guess for now, waiting for official numbers to come later in January

3a. Fixed VWINX (Wellesley) 1970 coarse mapping - in Rev16d, it wasn't updated with latest LCV value from Tyler's Stock Index Calculator

3b. Fixed 1985-89 coarse mapping for USMV data series - copy and paste error dating from Rev16e

3c. Some historical numbers used to be rounded to two decimals =>now including all known decimals

4. Replaced VTMGX (Int'l Developed/EAFE) by VDVIX, to use the investor's data series of the fund, for consistency with the other funds.

5. Extended entire spreadsheet to 2025 and improved automation f(last year), to ease future annual updates

6a. Added regular SWR (Safe Withdrawal Rate) and PWR (Perpetual Withdrawal Rate) computation for all retirement cycles in a given time period (e.g. 30 years cycles)

6b. Added a portfolio cycles comparison chart in Analyze_Portfolio (e.g. 30 years retirement cycles) with flexible controls

7. Replaced Real/Nominal and Premium True/False controls in Analyze_Portfolio by single Real/Nominal/Premium control

8. Added more Expense Ratio historical data series in Data_Misc: now tracking ERs for VTSMX, VFINX, NAESX, VGTSX, VEIEX, VTRIX, VBMFX, VWELX, FMAGX.

9. Added a setting in Data_TR_USD (top of the inflation column) allowing to adjust the inflation rate by a fixed factor.

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In Excel .xlsx format:

Backtest-Portfolio-returns-rev17c.xlsx
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Check the README tab in the spreadsheet for more details about the revision history

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