The following conventions are used in this publication:• In tables, a blank cell indicates "not applicable," ellipsis points ( . . .) indicate "not available," and 0 or 0.0 indicates "zero" or "negligible." Minor discrepancies between sums of constituent figures and totals are due to rounding.• An en dash (-) between years or months (for example, 2005-06 or January-June) indicates the years or months covered, including the beginning and ending years or months; a slash or virgule (/) between years or months (for example, 2005/06) indicates a fiscal or financial year, as does the abbreviation FY (for example, FY2006).• "Billion" means a thousand million; "trillion" means a thousand billion.• "Basis points" refer to hundredths of 1 percentage point (for example, 25 basis points are equivalent to ¼ of 1 percentage point).As used in this publication, the term "country" does not in all cases refer to a territorial entity that is a state as understood by international law and practice. As used here, the term also covers some territorial entities that are not states but for which statistical data are maintained on a separate and independent basis. 4.3. Impact of GDP Volatility on Forecast Quality 5.1. Old-Age Dependency Ratios in Selected G-7 Countries 5.2. Government Spending on Old-Age Pensions 5.3. Projected Canada Pension Plan Contribution Rates and Pension Reserves 6.1. Effects on Real GDP of Immediate versus Delayed Wage Tax Cuts 6.2. Effects on Real GDP of Immediate versus Delayed Corporate Income Tax Cuts 6.3. Effects of Alternative Parameterizations on Impact of a Cut in Transfers and in the Wage Tax Rate on Real GDP 6.4. Effects of Alternative Parameterizations on Impact of a Cut in Transfers and in the Corporate Income Tax Rate on Real GDP