Question: What year did Ritesh Sidhwani make his first film under the banner of Excel Entertainment?

Context paragraphs:
Don (2006 Hindi film): Don (also known as Don – The Chase Begins Again) is a 2006 Indian action-thriller film directed by Farhan Akhtar.  The film was produced by Ritesh Sidhwani and Akhtar's production company Excel Entertainment.  The film stars Shah Rukh Khan and Priyanka Chopra, with Arjun Rampal, Boman Irani, Isha Koppikar, and Om Puri appearing in supporting roles.  "Don" is a remake of the 1978 film of the same name, and follows the titular criminal's look-alike who has been sent on a clandestine mission to impersonate Don after he is wounded in a chase, and to infiltrate the plans of the drug mafia.

Zindagi Na Milegi Dobara: Zindagi Na Milegi Dobara () is a 2011 Indian comedy-drama road film directed by Zoya Akhtar and produced by Farhan Akhtar and Ritesh Sidhwani of Excel Entertainment.  The film features an ensemble cast including Hrithik Roshan as Arjun, Abhay Deol as Kabir and Farhan Akhtar as Imraan.  It also stars Katrina Kaif as Laila, Kalki Koechlin as Natasha, and Ariadna Cabrol as Nuria along with Naseeruddin Shah making a special appearance.  Made on a budget of million () , the film was shot in Spain, India, Egypt and the United Kingdom.

Dil Chahta Hai: Dil Chahta Hai (English: "The Heart Desires") is a 2001 Indian comedy-drama film starring Aamir Khan, Saif Ali Khan, Akshaye Khanna, Preity Zinta, Sonali Kulkarni, and Dimple Kapadia.  The first film written and directed by Farhan Akhtar, it is set in modern-day urban Mumbai and Sydney, and focuses on a major period of transition in the lives of three young friends.

Karthik Calling Karthik: Karthik Calling Karthik is a 2010 Indian psychological thriller film, written and directed by Vijay Lalwani and produced by Farhan Akhtar and Ritesh Sidhwani under the banner of Excel Entertainment and Reliance Big Pictures.  The film stars Farhan Akhtar and Deepika Padukone in lead roles.  Ram Kapoor and Shefali Shah play supporting roles in the film.  The film's music was composed by the trio of Shankar-Ehsaan-Loy, while the background score was composed by MIDIval Punditz and Karsh Kale.

Positive (2007 film): Positive is a 2007 Hindi short film directed by Farhan Akhtar and produced by Farhan Akhtar and Ritesh Sidhwani under their Excel Entertainment Pvt. Ltd. banner.  The film starred Shabana Azmi and Boman Irani in leads roles.

Ritesh Sidhwani: Ritesh Sidhwani (born 1973) is a Bollywood film producer, who founded a film production house under the banner of Excel Entertainment Pvt. Ltd. Along with long-time friend Farhan Akhtar, he brought to the audience "Dil Chahta Hai", his first film under his banner.

Raees (film): Raees (English: "Wealthy") is a 2017 Indian crime action film film directed by Rahul Dholakia and produced by Gauri Khan, Ritesh Sidhwani and Farhan Akhtar under their banners Red Chillies Entertainment and Excel Entertainment.  It stars Shah Rukh Khan, Mahira Khan and Nawazuddin Siddiqui.  The film was a critical and commercial success.

Excel Entertainment: Excel Entertainment is an Indian film studio based in Mumbai.  It was created by Farhan Akhtar, and Ritesh Sidhwani in 1999.  The two have gone on to create several films under Excel's banner.

Gold (2018 film): Gold is an upcoming 2018 Indian sports film, directed by Reema Kagti and produced by Ritesh Sidhwani and Farhan Akhtar under the banner Excel Entertainment.  It is a biopic based on the life of hockey player Balbir Singh, who was on the team that won the first Olympic medal for India as a free nation in 1948.

Excel Media: Excel Entertainment has formed a joint venture with the Dubai-based Riva Group to form Excel Media.  Excel Entertainment is an Indian film studio based in Mumbai.  It was created by Farhan Akhtar, and Ritesh Sidhwani in 1999.  The two have gone on to create several films under Excel's banner.

Supporting paragraphs: Ritesh Sidhwani Dil Chahta Hai
Answer: 2001