SPD Smith’s 111 in the ongoing test at Dharamsala against India provide the fifth century of the season 2016-17. His feat of scoring five centuries in a season provides the 18^th occasion of a batsman scoring five ore more  centuries in a season. All such occasions are listed below

No	Player	Team	Mat	Inns	NO	Runs	HS	Ave	100	Season
1	RT Ponting	Aus	12	23	4	1483	149	78.05	8	2005/06
2	SM Gavaskar	Ind	9	15	2	1179	205	90.69	6	1978/79
3	JH Kallis	SAF	12	20	4	1227	186	76.68	6	2007/08
4	CL Walcott	Win	5	10	0	827	155	82.70	5	1955
5	M Amarnath	Ind	11	19	2	1182	120	69.52	5	1982/83
6	MJ Slater	Aus	12	23	0	975	123	42.39	5	1998/99
7	SR Waugh	Aus	12	23	6	1142	199	67.17	5	1998/99
8	ML Hayden	Aus	9	16	2	1035	138	73.92	5	2001/02
9	JH Kallis	SAF	9	16	3	1166	177	89.69	5	2003/04
10	AC Gilchrist	Aus	12	17	3	967	162	69.07	5	2004/05
11	DR Martyn	Aus	12	18	2	1072	165	67.00	5	2004/05
12	ML Hayden	Aus	12	23	1	1287	137	58.50	5	2005/06
13	G Gambhir	Ind	8	16	1	1269	206	84.60	5	2008/09
14	AJ Strauss	Eng	7	13	2	793	169	72.09	5	2008/09
15	SR Tendulkar	Ind	7	10	2	674	143	84.25	5	2009/10
16	JH Kallis	SAF	5	9	3	821	201*	136.83	5	2010/11
17	DA Warner	Aus	8	16	1	1066	145	71.06	5	2013/14
18	SPD Smith	Aus	10	18	3	1135	178*	75.66	5	2016/17

It is intresting to note that half of 18 occasions of a batsman scoring five ore centuries belonged to Australian batsmen. The following table lists the nine occasion of Australian batsman scoring five or more centuries in a season

No	Player	Team	Mat	Inns	NO	Runs	HS	Ave	100	Season
1	RT Ponting	Aus	12	23	4	1483	149	78.05	8	2005/06
2	MJ Slater	Aus	12	23	0	975	123	42.39	5	1998/99
3	SR Waugh	Aus	12	23	6	1142	199	67.17	5	1998/99
4	ML Hayden	Aus	9	16	2	1035	138	73.92	5	2001/02
5	AC Gilchrist	Aus	12	17	3	967	162	69.07	5	2004/05
6	DR Martyn	Aus	12	18	2	1072	165	67.00	5	2004/05
7	ML Hayden	Aus	12	23	1	1287	137	58.50	5	2005/06
8	DA Warner	Aus	8	16	1	1066	145	71.06	5	2013/14
9	SPD Smith	Aus	10	18	3	1135	178*	75.66	5	2016/17