AbbVie 4.9% 18% Hasbro 2.9% 8% PepsiCo 3.1% 8% Starbucks 1.7% 18% Apple 0.7% 10% Visa 0.6% 18% Clorox 2.4% 8% Walgreen Boots Alliance 4% 5% Data sources: Yahoo! It has averaged about 3% annually over long periods, but can be as low as zero or hit double digits in some years. Just experiencing typical inflation rates is enough to cut your purchasing power roughly in half over 30 years, so that something that costs you $100 when you retire will cost you $200 30 years later.