1981198219831984198519861987198819891990199119921993199419951996199719981999200020012002200320042005200620072008200920102011201220132014201520162017
n/an/an/an/an/an/an/an/an/an/an/an/an/an/an/an/an/an/an/an/an/an/an/an/an/an/an/an/an/an/a13.5013.1012.5012.6012.4012.2011.80
20,00064,90064,900130,400130,40084,80084,80084,20084,20084,20048,70048,70048,70048,80048,80048,80058,40058,40058,40055,30055,30055,30055,40055,40055,40055,40053,20048,29445,47843,74241,98441,18039,53940,22739,96439,58938,281
n/an/an/an/an/an/an/an/an/an/an/an/an/an/an/a35%36%36%37%37%37%37%37%37%37%37%37%37%36%36%36%36%35%35%36%35%35%
n/an/an/an/an/an/an/an/an/an/an/an/an/an/an/a17%17%18%20%20%21%22%23%23%24%25%26%27%27%28%28%28%29%30%30%30%32%
n/an/an/an/an/an/an/an/an/an/an/an/an/an/an/a72%n/a72%n/a73%74%76%77%77%76%77%77%75%76%76%74%77%75%77%74%77%74%
n/an/an/an/an/an/an/an/an/an/an/an/an/an/an/a23.4%23.2%22.9%22.7%23.2%22.9%23.1%22.0%20.8%20.6%20%19.7%18.3%17.9%17.3%21.2%19.6%19.0%18.1%17.5%17.0%17.1%
n/an/an/an/an/an/an/an/an/an/an/an/an/an/an/a5%5%5%6%6%7%7%7%7%7%8%8%8%8%9%10%10%10%10%10%11%11%
n/an/an/an/an/an/an/an/an/an/an/an/an/an/an/an/an/an/an/a7%7%8%8%8%8%8%8%9%9%9%9%9%9%9%9%9%9%
n/an/an/an/an/an/an/an/an/an/an/an/an/an/a14%n/a14%n/a15%15%15%16%17%15%14%15%16%16%16%15%18%17%17%16%16%17%17%
n/an/an/an/an/an/an/an/an/an/an/an/an/an/an/an/an/an/an/an/an/an/an/an/an/an/an/an/an/an/a18%18%19%19%19%17%20%
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