Table:
year
police officers
civilian personnel
total personnel
police officers as a proportion of total personnel
civilian personnel as a proportion of total personnel
police to civilians

total
officers per 100,000 population
percentage change in rate
total
per 100,000 population
percentage change in rate

number
rate
percent
number
rate
percent
number
percent
ratio

1962
26,129
140.6
..
5,699
30.7
..
31,828
82.1
17.9
4.6

1963
27,333
144.4
2.7
5,935
31.4
2.3
33,268
82.2
17.8
4.6

1964
28,823
149.4
3.5
6,655
34.5
9.9
35,478
81.2
18.8
4.3

1965
30,146
153.5
2.7
7,133
36.3
5.2
37,279
80.9
19.1
4.2

1966
32,086
160.3
4.4
7,583
37.9
4.4
39,669
80.9
19.1
4.2

1967
33,792
165.8
3.4
8,018
39.3
3.7
41,810
80.8
19.2
4.2

1968
34,887
168.5
1.6
8,351
40.3
2.5
43,238
80.7
19.3
4.2

1969
36,342
173.0
2.7
8,963
42.7
6.0
45,305
80.2
19.8
4.1

1970
37,949
178.2
3.0
9,936
46.7
9.4
47,885
79.3
20.7
3.8

1971
40,148
182.8
2.6
10,597
48.3
3.4
50,745
79.1
20.9
3.8

1972
41,214
185.5
1.5
11,762
52.9
9.5
52,976
77.8
22.2
3.5

1973
43,142
191.8
3.4
12,297
54.7
3.4
55,439
77.8
22.2
3.5

1974
45,276
198.5
3.5
12,085
53.0
-3.1
57,361
78.9
21.1
3.7

1975
47,713
206.2
3.9
13,794
59.6
12.5
61,507
77.6
22.4
3.5

1976
48,213
205.6
-0.3
14,377
61.3
2.9
62,590
77.0
23.0
3.4

1977
48,764
205.5
0.0
15,231
64.2
4.7
63,995
76.2
23.8
3.2

1978
48,705
203.2
-1.1
15,749
65.7
2.3
64,454
75.6
24.4
3.1

1979
48,990
202.4
-0.4
15,001
62.0
-5.6
63,991
76.6
23.4
3.3

1980
49,841
203.3
0.4
16,410
66.9
7.9
66,251
75.2
24.8
3.0

1981
50,563
203.7
0.2
16,999
68.5
2.4
67,562
74.8
25.2
3.0

1982
50,539
201.2
-1.2
17,738
70.6
3.1
68,277
74.0
26.0
2.8

1983
50,081
197.4
-1.9
17,342
68.4
-3.1
67,423
74.3
25.7
2.9

1984
50,010
195.3
-1.1
17,503
68.4
0.0
67,513
74.1
25.9
2.9

1985
50,351
194.8
-0.3
17,702
68.5
0.1
68,053
74.0
26.0
2.8

1986
51,425
197.0
1.1
18,273
70.0
2.2
69,698
73.8
26.2
2.8

1987
52,510
198.5
0.8
19,558
73.9
5.6
72,068
72.9
27.1
2.7

1988
53,312
199.0
0.2
19,407
72.4
-2.1
72,719
73.3
26.7
2.7

1989
54,211
198.7
-0.1
19,526
71.6
-1.2
73,737
73.5
26.5
2.8

1990
56,034
202.3
1.8
19,259
69.5
-2.8
75,293
74.4
25.6
2.9

1991
56,768
202.5
0.1
19,440
69.4
-0.3
76,208
74.5
25.5
2.9

1992
56,992
200.9
-0.8
20,059
70.7
2.0
77,051
74.0
26.0
2.8

1993
56,901
198.4
-1.3
19,956
69.6
-1.6
76,857
74.0
26.0
2.9

1994
55,859
192.6
-2.9
19,492
67.2
-3.4
75,351
74.1
25.9
2.9

1995
55,008
187.7
-2.5
19,259
65.7
-2.2
74,267
74.1
25.9
2.9

1996
54,323
183.5
-2.3
19,603
66.2
0.7
73,926
73.5
26.5
2.8

1997
54,719
183.0
-0.3
19,679
65.8
-0.6
74,398
73.5
26.5
2.8

1998
54,763
181.6
-0.7
19,383
64.3
-2.3
74,146
73.9
26.1
2.8

1999
55,321
182.0
0.2
20,169
66.3
3.2
75,490
73.3
26.7
2.7

2000
55,954
182.3
0.2
19,917
64.9
-2.2
75,871
73.7
26.3
2.8

2001
57,076
184.0
0.9
19,982
64.4
-0.7
77,058
74.1
25.9
2.9

2002
58,422
186.3
1.3
20,732
66.1
2.6
79,154
73.8
26.2
2.8

2003
59,412
187.8
0.8
21,476
67.9
2.7
80,888
73.4
26.6
2.8

2004
59,800
187.2
-0.3
22,212
69.5
2.5
82,012
72.9
27.1
2.7

2005
61,026
189.3
1.1
23,391
72.5
4.3
84,417
72.3
27.7
2.6

2006
62,461
191.8
1.3
23,911
73.4
1.2
86,372
72.3
27.7
2.6

2007
64,134
195.0
1.7
25,295
76.9
4.8
89,429
71.7
28.3
2.5

2008
65,283
196.4
0.7
25,630
77.1
0.2
90,913
71.8
28.2
2.5

2009
67,243
200.0
1.8
27,056
80.5
4.4
94,299
71.3
28.7
2.5

2010
69,068
203.1
1.6
27,357
80.4
0.0
96,425
71.6
28.4
2.5

2011r
69,424
202.2
-0.5
28,142
82.0
1.9
97,566
71.2
28.8
2.5

2012r
69,505
200.2
-1.0
28,202
81.2
-0.9
97,707
71.1
28.9
2.5

2013r
69,250
197.4
-1.4
27,870
79.4
-2.2
97,120
71.3
28.7
2.5

2014r
68,806
194.2
-1.6
28,425
80.2
1.0
97,231
70.8
29.2
2.4

2015r
68,772
192.6
-0.8
28,371
79.5
-0.9
97,143
70.8
29.2
2.4

2016r
68,859
190.7
-1.0
28,436
78.7
-0.9
97,295
70.8
29.2
2.4

2017r
69,025
188.9
-0.9
29,052
79.5
1.0
98,077
70.4
29.6
2.4

2018
68,562
185.0
-2.1
31,050
83.8
5.4
99,612
68.8
31.2
2.2

Statement: there was a decrease of 463 police officers from 2017 to 2018.
Question: how many police officers are decreased from 2017 to 2018 ?
Answer: [-463]