Here's an interesting view of our ring years:
2003:
29 Pedro
33 Lowe
33 Wake
30 Burkett
14 Fossom
23 others (10 Suppan 13 others)
2004:
33 Pedro
32 Schilling
33 Lowe
30 Wake
29 Arroyo
5 others
2005:
11 Schilling
30 Wells
32 Clement
33 Wake
32 Arroyo
35 others (16 Wade Miller)
2006:
33 Beckett
31 Schilling
8 Wells
12 Clement
23 Wake
63 others (15 Lester, 10 Snyder)
2007:
30 Beckett
24 Schilling
32 Dice-K
31 Wake
23 Tavarez
22 others (11 Lester)
2008:
27 Beckett
29 Dice-K
30 Wake
33 Lester
15 Buchholz
28 others (9 Masterson, 8 Byrd, 7 Colon)
2009:
32 Beckett
32 Lester
12 Dice-K
21 Wake
16 Buchholz
49 others (24 Penny, 8 Smoltz, 6 Masterson, 6 Byrd)
2010:
21 Beckett
32 Lester
33 Lackey
25 Dice-K
28 Buchholz
23 others (19 Wake)
2011:
30 Beckett
30 Lester
28 Lackey
7 Dice-K
14 Buchholz
50 others (23 Wake, 12 A Miller, 8 Bedard)
2012:
21 Beckett
33 Lester
0 Lackey
29 Buchholz
10 Bard
69 others (29 Doubront, 18 Cook, 11 Dice-K, 9 Morales)
2013:
33 Lester
29 Lackey
16 Buchholz
29 Dempster
27 Doubront
28 others (10 Peavy, 7 Webster, 6 Aceves)
2014: (traded 4/5ths of rotation)
21 Lester
21 Lackey
20 Peavy
28 Buchholz
10 Doubront
68 others (18 DLR, 15 Workman, 11 Webster, 10 Kell7, 7 Ranaudo)
2015:
28 Porcello
32 Miley
18 Buchholz
25 Kelly
9 Masterson
59 others (21 ERod, 11 Owens, 9 Wright, 4 Hill)
2016:
35 Price
33 Porcello
21 Buchholz
20 ERod
6 Kelly
53 others (24 Wright, 13 Pom)
2017:
32 Sale
11 Price
33 Porcello
32 Pomeranz
24 ERod
41 others (15 Fister, 5 Johnson, 5 Wright)
2018:
27 Sale
30 Price
33 Porcello
11 Pomeranz
23 ERod
38 others (13 Johnson, 11 Eovaldi, 8 Velazquez)
2019:
25 Sale
22 Price
32 Porcello
33 ERod
11 Eovaldi
36 others (so far)- 8 Velazquez, 7 Johnson, 6 Cashner
Fewest "others":
5 2004
22 2007
23 2003
23 2010
28 2013
28 2008
35 2005
36+ 2019
38 2018
41 2017
49 2009
50 2011
53 2016
59 2015
63 2014
63 2006
69 2012