,
(
50
100
150
200
250
300
350
400
450
500
)
1
...
73
74
75
76
77
78
79
80
81
82
83
84
85
...
138
-
.
1
,
"
,
C , 31 2017
2018
: 100
2018 2019 2020
,
( )
2015
2017
1
...
73
74
75
76
77
78
79
80
81
82
83
84
85
...
138
