/**
 * Calculate Compound Annual Growth Rate (CAGR).
 *
 * Calculates the mean annual growth rate of an investment over a specified
 * period of time, assuming profits are reinvested at the end of each year.
 *
 * @param beginValue Initial investment value
 * @param endValue Final value after the period
 * @param years Time period in years
 * @returns CAGR as a percentage (rounded to nearest integer)
 *
 * @example
 * // Calculate CAGR for investment from 10000 to 20000 in 3 years
 * calculateCAGR(10000, 20000, 3);
 * // => 26 (26%)
 */
export declare function calculateCAGR(beginValue: number, endValue: number, years: number): number;