AI Analysis: Retail services price index, monthly

Executive Summary

Canada's Retail Services Price Index (Statistics Canada, Table 18100251) shows a clear and sustained upward trend from 2008 to 2025, with overall retail trade prices rising 50.5% from an index value of 87.7 to 132.0 against a 2013 baseline of 100. Spanning 18,294 records across 89 NAICS retail categories, the data reveals that price growth was broadly synchronized across sectors — driven primarily by shared macroeconomic forces — with a notable acceleration post-2020 reflecting COVID-era inflation pressures. Despite this acceleration, no statistically significant outliers were detected, indicating that growth remained gradual and within historically normal bounds throughout the entire period.

Key Findings

• Overall retail trade prices rose 50.5% over the 2008–2025 period, climbing from an index value of 87.7 to 132.0 (base year 2013=100).
• The dataset covers 18,294 records across 89 unique NAICS retail industry classifications, spanning 216 monthly periods from January 2008 to December 2025.
• The price index distribution is right-skewed, with a mean of 111.1 and a median of 104.3, indicating that a subset of high-growth categories pulls the overall average upward.
• Index values range widely from 41.6 to 303.7, with the middle 50% of values falling between 98.8 and 119.6, reflecting modest but consistent price growth across most retail categories since 2013.
• Most of the 15 analyzed NAICS categories show strong positive correlations with one another, suggesting broad macroeconomic forces such as inflation — rather than sector-specific dynamics — are the primary driver of retail price changes.
• No statistically significant outliers were detected using IQR-based analysis; even during the COVID-19 period (2020–2022), the maximum year-over-year price change of 6.6% remained just within the normal boundary range of -2.6% to +6.8%.
• A post-2020 acceleration in price growth is evident across multiple retail sectors, consistent with pandemic-era supply chain disruptions and broader inflationary pressures observed across the Canadian economy.