Wikipedia:Milestone statistics

Milestone	Languages (dates milestones reached, in order of reaching them)
2,000,000	English (9 September 2007)
1,000,000	German (27 December 2009); French (21 September 2010); Dutch (17 December 2011)
500,000	Polish (14 May 2008); Japanese (25 June 2008); Italian (3 October 2008); Spanish (5 August 2009); Portuguese (12 August 2009); Russian (25 February 2010)
200,000	Swedish (23 December 2006); Chinese (31 July 2008); Norwegian (Bokmål) (13 December 2008); Finnish (12 April 2009); Catalan (21 September 2009); Ukrainian (7 April 2010); Vietnamese (7 April 2011); Czech (6 July 2011); Hungarian (10 September 2011)
100,000	Volapük (7 September 2007); Romanian (11 January 2008); Turkish (3 February 2008); Esperanto (15 June 2008); Slovak (27 August 2008); Danish (29 December 2008); Indonesian (20 February 2009); Arabic (25 May 2009); Korean (4 June 2009); Serbian (20 November 2009); Hebrew (10 January 2010); Lithuanian (18 January 2010); Bulgarian (23 May 2010); Slovene (15 August 2010); Waray-Waray (24 August 2010); Persian (25 August 2010); Malay (9 January 2011); Basque (21 May 2011); Croatian (7 July 2011); Hindi (30 August 2011); Kazakh (26 October 2011)
50,000	Estonian (4 June 2008); Haitian (12 August 2008); Simple English (6 January 2009); Newar / Nepal Bhasa (15 April 2009); Norwegian (Nynorsk) (9 July 2009); Galician (23 July 2009); Thai (4 September 2009); Greek (10 April 2010); Aromanian (4 July 2010); Azeri (13 January 2011); Tagalog (15 January 2011); Latin (11 February 2011); Georgian (7 July 2011); Macedonian (2 October 2011); Occitan (30 October 2011); Serbo-Croatian (8 November 2011); Piedmontese (31 December 2011); Telugu (13 March 2012)
20,000	Cebuano (2 February 2007); Bishnupriya Manipuri (16 August 2007); Bosnian (30 August 2007); Luxembourgish (2 February 2008); Icelandic (15 February 2008); Albanian (19 April 2008); Breton (20 June 2008); Marathi (22 September 2008); Welsh (20 November 2008); Latvian (13 February 2009); Belarusian (Tarashkevitsa) (17 June 2009); Bengali (28 June 2009); Javanese (13 July 2009); Tamil (22 November 2009); Aragonese (4 April 2010); Belarusian (16 May 2010); Swahili (21 August 2010); Ido (23 August 2010); Lombard (14 April 2011); West Frisian (22 May 2011); Gujarati (1 June 2011); Yoruba (3 July 2011); Malagasy (16 July 2011); Malayalam (5 September 2011); Western Panjabi (6 September 2011); Afrikaans (11 November 2011); Armenian (15 January 2012); Nepali (7 May 2012)
10,000	Neapolitan (20 June 2006); Sundanese (13 April 2007); Low Saxon (2 July 2007); Sicilian (6 July 2007); Kurdish (19 September 2007); Asturian (20 November 2007); Walloon (20 March 2008); Cantonese (26 January 2009); Quechua (13 March 2009); Urdu (29 March 2009); Chuvash (7 April 2009); Samogitian (7 April 2009); Irish (20 February 2010); Kannada (14 January 2011); Amharic (27 May 2011); Zazaki (21 June 2011); Alemannic (22 June 2011); Tatar (8 July 2011); Buginese (8 November 2011); Burmese (30 November 2011); Interlingua (5 December 2011); Banyumasan (10 January 2012); Bashkir (20 January 2012); Tajik (23 April 2012); Scottish Gaelic (17 May 2012);
5,000	Uzbek (20 August 2006); Corsican (22 December 2006); Venetian (3 July 2007); Tarantino (2 August 2007); Maori (10 September 2007); Kapampangan (1 April 2008); Yiddish (5 May 2008); Upper Sorbian (24 July 2008); Nahuatl (5 September 2008); Gilaki (30 April 2009); Min Nan (30 April 2009); Limburgish (3 October 2009); Sakha (10 October 2009); Ossetian (24 February 2010); Egyptian Arabic (7 March 2010); Gan (29 March 2010); Mongolian (10 September 2010); Scots (1 December 2010); Central Bicolano (21 April 2011); Fiji Hindi (16 June 2011); Faroese (13 July 2011); Hill Mari (4 August 2011); Sanskrit (5 August 2011); Sinhalese (22 August 2011); Tibetan (14 December 2011); Bavarian (25 December 2011); Sorani (31 December 2011); Kyrgyz (13 February 2012); Ilokano (19 April 2012)
2,000	Norman (14 November 2006); Dutch Low Saxon (11 January 2007); Friulian (22 April 2007); Bhojpuri/Bihari (29 April 2007); Northern Sami (15 May 2007); Novial (20 May 2007); Pali (7 June 2007); Pangasinan (8 July 2007); West Flemish (27 August 2007); Ligurian (2 November 2007); Divehi (28 December 2007); Romansh (29 January 2008); Classical Chinese (26 April 2008); Franco-Provençal/Arpitan (2 May 2008); Maltese (5 May 2008); Wu (5 September 2008); Manx (17 November 2008); Khmer (27 November 2008); Voro (30 December 2008); Turkmen (19 April 2009); Mazandarani (24 May 2009); Kashubian (4 June 2009); Uyghur (17 June 2009); Ladino (3 July 2009); Ripuarian (5 November 2009); Sardinian (5 December 2009); Anglo-Saxon (5 April 2010); Zamboanga Chavacano (28 July 2010); Hakka (15 August 2010); Cornish (15 November 2010); Pashto (25 November 2010); Rusyn/Ruthenian (11 March 2011); Meadow Mari (13 April 2011); Udmurt (21 April 2011); Komi (16 May 2011); Navajo (18 May 2011); Komi-Permyak (11 June 2011); Somali (13 June 2011); Punjabi (25 August 2011); Saterland Frisian (3 December 2011); Extremaduran (27 December 2011); Silesian (30 December 2011); Zeelandic (16 January 2012); Oriya (17 January 2012); Mingrelian (22 February 2012); Aymara (1 April 2012); North Frisian (12 May 2012)
1,000	Pennsylvania German (16 October 2006); Tongan (25 April 2007); Lingala (1 December 2007); Hawaiian (9 February 2008); Interlingue (31 May 2008); Guarani (6 September 2008); Erzya (16 July 2009); Lojban (26 August 2009); Wolof (27 August 2009); Crimean Tatar (21 October 2009); Assyrian Neo-Aramaic (21 October 2009); Acehnese (17 December 2009); Karachay-Balkar (25 April 2010); Kalmyk (8 May 2010); Emiliano-Romagnolo (2 July 2010); Picard (26 August 2010); Banjar (30 November 2010); Greenlandic (8 December 2010); Papiamentu (12 December 2010); Chechen (8 January 2011); Kinyarwanda (10 January 2011); Tok Pisin (5 March 2011); Palatinate German (6 June 2011); Lak (24 July 2011); Moksha (30 July 2011); Avar (10 September 2011); Gagauz (2 October 2011); Assamese (7 January 2012); Lower Sorbian (28 January 2012); Kabyle (18 February 2012); Veps (10 May 2012)