๊ฐ‘์ž๊ธฐ ๋น„ํŠธ์ฝ”์ธํ™€๋”๋“ค์ด ๋น„ํŠธ์ฝ”์ธ ํŒ”๊ณ  ์ œ๋กœ๋ฒ ์ด์Šค์— 3~4%๋„ฃ๋Š”๋‹ค๊ณ  ์ƒ๊ฐํ•ด๋ณด์…ˆ


๋ณ‘์‹ ์ƒˆ๋ผ๋„ ์•„๋‹ˆ๊ณ  ๊ทธ์ง“์„ ์™œํ•จ?