Here are just the ones discovered last year:

CK12Y030 C/2012 Y3 McNaught
0275P 275P/2012 Y2 Hermann
CK12Y010 C/2012 Y1 LINEAR
CK12X020 C/2012 X2 PANSTARRS
CK12X010 C/2012 X1 LINEAR
PK12W34A P/2012 WA34 Lemmon-PANSTARRS
0274P 274P/2012 WX32 Tombaugh-Tenagra
0273P 273P/2012 V4 Pons-Gambart
0272P 272P/2012 V3 NEAT
CK12V020 C/2012 V2 LINEAR
CK12V010 C/2012 V1 PANSTARRS
PK12U27S P/2012 US27 Siding Spring
PK12U020 P/2012 U2 PANSTARRS
CK12U010 C/2012 U1 PANSTARRS
0271P 271P/2012 TB36 van Houten-Lemmon
PK12T08K P/2012 TK8 Tenagra
0276P 276P/2012 T7 Vorobjov
CK12T060 C/2012 T6 Kowalski
CK12T050 C/2012 T5 Bressi
CK12T040 C/2012 T4 McNaught
PK12T030 P/2012 T3 PANSTARRS
PK12T020 P/2012 T2 PANSTARRS
PK12T010 P/2012 T1 PANSTARRS
PK12S06B P/2012 SB6 Lemmon
0270P 270P/2012 S5 Gehrels
CK12S040 C/2012 S4 PANSTARRS
CK12S030 C/2012 S3 PANSTARRS
PK12S020 P/2012 S2 La Sagra
CK12S010 C/2012 S1 ISON
0269P 269P/2012 R2 Jedicke
0267P 267P/2012 R1 LONEOS
CK12Q010 C/2012 Q1 Kowalski
0268P 268P/2012 P2 Bernardi
0266P 266P/2012 P1 Christensen
PK12O030 P/2012 O3 McNaught
PK12O020 P/2012 O2 McNaught
PK12O010 P/2012 O1 McNaught
PK12N00J P/2012 NJ La Sagra
0265P 265P/2012 M1 LINEAR
CK12L26P C/2012 LP26 Palomar
0264P 264P/2012 L4 Larsen
CK12L030 C/2012 L3 LINEAR
CK12L020 C/2012 L2 LINEAR
CK12L010 C/2012 L1 LINEAR
0263P 263P/2012 K9 Gibbs
CK12K080 C/2012 K8 Lemmon
0262P 262P/2012 K7 McNaught-Russell
CK12K060 C/2012 K6 McNaught
CK12K050 C/2012 K5 LINEAR
0261P 261P/2012 K4 Larson
PK12K030 P/2012 K3 Gibbs
0260P 260P/2012 K2 McNaught
CK12K010 C/2012 K1 PANSTARRS
CK12J010 C/2012 J1 Catalina
CK12H020 C/2012 H2 McNaught
0258P 258P/2012 H1 PANSTARRS
PK12G010 P/2012 G1 PANSTARRS
CK12F060 C/2012 F6 Lemmon
PK12F050 P/2012 F5 Gibbs
0257P 257P/2012 F4 Catalina
CK12F030 C/2012 F3 PANSTARRS
CK12F020 C/2012 F2 PANSTARRS
CK12F010 C/2012 F1 Gibbs
CK12E030 C/2012 E3 PANSTARRS
CK12E020 C/2012 E2 SWAN
CK12E010 C/2012 E1 Hill