List of Grand Slam boys' singles champions
Champions by year
Table:
Year	Australian Open	French Open	Wimbledon	US Open

1922	Australia Alan Yeldham	started in 1947	started in 1973

1923	Australia Leonard Cryle

1924	Australia Alan Coldham

1925	Australia Alan Coldham

1926	Australia Jack Crawford

1927	Australia Jack Crawford

1928	Australia Jack Crawford

1929	Australia Jack Crawford

1930	Australia Don Turnbull

1931	Australia Bruce Moore

1932	Australia Vivian McGrath

1933	Australia Adrian Quist

1934	Australia Neil Ennis

1935	Australia John Bromwich

1936	Australia John Bromwich

1937	Australia John Bromwich

1938	Australia Max Newcombe

1939	Australia Bill Sidwell

1940	Australia Dinny Pails

1941- 1945	no competition, World War II

1946	Australia Frank Sedgman

1947	Australia Don Candy	Belgium Jacky Brichant	Denmark Kurt Nielsen

1948	Australia Ken McGregor	Denmark Kurt Nielsen	Sweden Steffan Stockenberg

1949	Australia Clive Wilderspin	France Jean-Claude Molinari	Sweden Steffan Stockenberg

1950	Australia Ken Rosewall	France Roland Dubuisson	United Kingdom John Horn

1951	Australia Lew Hoad	United States Ham Richardson	South Africa Johann Kupferburger

1952	Australia Ken Rosewall	Australia Ken Rosewall	United Kingdom Bobby Wilson

1953	Australia Bill Gilmour Sr.	France Jean-Noël Grinda	United Kingdom Billy Knight

1954	United Kingdom Billy Knight	Australia Roy Emerson	India Ramanathan Krishnan

1955	United States Gerry Moss	Spain Andrés Gimeno	United Kingdom Mike Hann

1956	Australia Bob Mark	Tunisia Mustapha Belkhodja	United States Ronald Holmberg

1957	Australia Rod Laver	Spain Alberto Arilla	United Kingdom Jimmy Tattersall

1958	Australia Martin Mulligan	United States Butch Buchholz	United States Butch Buchholz

1959	United States Butch Buchholz	West Germany Ingo Buding	Soviet Union Toomas Leius

1960	Australia Will Coghlan	West Germany Ingo Buding	South Africa Rodney Mandelstam

1961	Australia John Newcombe	Australia John Newcombe	United States Clark Graebner

1962	Australia John Newcombe	Australia John Newcombe	United Kingdom Stanley Matthews

1963	Australia John Newcombe	Greece Nicky Kalogeropoulos	Greece Nicky Kalogeropoulos

1964	Australia Tony Roche	United States Cliff Richey	United Arab Republic Ismail El Shafei

1965	France Georges Goven	United Kingdom Gerald Battrick	Soviet Union Vladimir Korotkov

1966	Australia Karl Coombes	Soviet Union Vladimir Korotkov	Soviet Union Vladimir Korotkov

1967	New Zealand Brian Fairlie	France Patrick Proisy	Spain Manuel Orantes

1968	Australia Phil Dent	Australia Phil Dent	Australia John Alexander

1969	Australia Allan McDonald	Spain Antonio Muñoz	South Africa Byron Bertram

1970	Australia John Alexander	Spain Juan Herrera	South Africa Byron Bertram

1971	Australia Cliff Letcher	Italy Corrado Barazzutti	United States Robert Kreiss

1972	Australia Paul Kronk	United Kingdom Buster Mottram	Sweden Björn Borg

1973	Australia Paul McNamee	Paraguay Víctor Pecci	United States Billy Martin	United States Billy Martin

1974	Australia Harry Britain	France Christophe Casa	United States Billy Martin	United States Billy Martin

1975	Australia Brad Drewett	France Christophe Roger-Vasselin	New Zealand Chris Lewis	United States Howard Schoenfield

1976	Australia Ray Kelly	Switzerland Heinz Günthardt	Switzerland Heinz Günthardt	Ecuador Ricardo Ycaza

1977	Australia Brad Drewett (Jan) Australia Ray Kelly (Dec)	United States John McEnroe	United States Van Winitsky	United States Van Winitsky

1978	Australia Pat Serret	Czechoslovakia Ivan Lendl	Czechoslovakia Ivan Lendl	Sweden Per Hjertquist

1979	Australia Greg Whitecross	India Ramesh Krishnan	India Ramesh Krishnan	United States Scott Davis

1980	Australia Craig Miller	France Henri Leconte	France Thierry Tulasne	United States Mike Falberg

1981	Sweden Jörgen Windahl	Sweden Mats Wilander	United States Matt Anger	Sweden Thomas Högstedt

1982	Australia Mark Kratzmann	France Tarik Benhabiles	Australia Pat Cash	Australia Pat Cash

1983	Sweden Stefan Edberg	Sweden Stefan Edberg	Sweden Stefan Edberg	Sweden Stefan Edberg

1984	Australia Mark Kratzmann	Sweden Kent Carlsson	Australia Mark Kratzmann	Australia Mark Kratzmann

1985	Australia Shane Barr	Peru Jaime Yzaga	Mexico Leonardo Lavalle	United States Tim Trigueiro

1986	no competition	Argentina Guillermo Pérez Roldán	Mexico Eduardo Vélez	Spain Javier Sánchez

1987	Australia Jason Stoltenberg	Argentina Guillermo Pérez Roldán	Italy Diego Nargiso	United States David Wheaton

1988	Australia Johan Anderson	Venezuela Nicolás Pereira	Venezuela Nicolás Pereira	Venezuela Nicolás Pereira

1989	Sweden Nicklas Kulti	France Fabrice Santoro	Sweden Nicklas Kulti	United States Jonathan Stark

1990	West Germany Dirk Dier	Italy Andrea Gaudenzi	India Leander Paes	Italy Andrea Gaudenzi

1991	Sweden Thomas Enqvist	Soviet Union Andrei Medvedev	Sweden Thomas Enqvist	India Leander Paes

1992	Australia Grant Doyle	Romania Andrei Pavel	Czech Republic David Škoch	United States Brian Dunn

1993	United Kingdom James Baily	Spain Roberto Carretero	Romania Răzvan Sabău	Chile Marcelo Ríos

1994	Australia Ben Ellwood	Spain Jacobo Díaz	United States Scott Humphries	Netherlands Sjeng Schalken

1995	Germany Nicolas Kiefer	Argentina Mariano Zabaleta	France Olivier Mutis	Germany Nicolas Kiefer

1996	Sweden Björn Rehnquist	Spain Alberto Martín	Belarus Vladimir Voltchkov	Germany Daniel Elsner

1997	Germany Daniel Elsner	Germany Daniel Elsner	South Africa Wesley Whitehouse	France Arnaud di Pasquale

1998	France Julien Jeanpierre	Chile Fernando González	Switzerland Roger Federer	Argentina David Nalbandian

1999	Denmark Kristian Pless	Argentina Guillermo Coria	Austria Jürgen Melzer	Finland Jarkko Nieminen

2000	United States Andy Roddick	France Paul-Henri Mathieu	France Nicolas Mahut	United States Andy Roddick

2001	Serbia and Montenegro Janko Tipsarević	Spain Carlos Cuadrado	Switzerland Roman Valent	Luxembourg Gilles Müller

2002	France Clément Morel	France Richard Gasquet	Australia Todd Reid	France Richard Gasquet

2003	Cyprus Marcos Baghdatis	Switzerland Stanislas Wawrinka	Romania Florin Mergea	France Jo-Wilfried Tsonga

2004	France Gaël Monfils	France Gaël Monfils	France Gaël Monfils	United Kingdom Andy Murray

2005	United States Donald Young	Croatia Marin Čilić	France Jérémy Chardy	United States Ryan Sweeting

2006	France Alexandre Sidorenko	Slovakia Martin Kližan	Netherlands Thiemo de Bakker	Czech Republic Dušan Lojda

2007	Australia Brydan Klein	Belarus Vladimir Ignatic	United States Donald Young	Lithuania Ričardas Berankis

2008	Australia Bernard Tomic	Chinese Taipei Yang Tsung-hua	Bulgaria Grigor Dimitrov	Bulgaria Grigor Dimitrov

2009	India Yuki Bhambri	Sweden Daniel Berta	Russia Andrey Kuznetsov	Australia Bernard Tomic

2010	Brazil Tiago Fernandes	Argentina Agustín Velotti	Hungary Márton Fucsovics	United States Jack Sock

2011	Czech Republic Jiří Veselý	United States Bjorn Fratangelo	Australia Luke Saville	United Kingdom Oliver Golding

2012	Australia Luke Saville	Belgium Kimmer Coppejans	Canada Filip Peliwo	Canada Filip Peliwo

2013	Australia Nick Kyrgios	Chile Christian Garín	Italy Gianluigi Quinzi	Croatia Borna Ćorić

2014	Germany Alexander Zverev	Russia Andrey Rublev	United States Noah Rubin	Australia Omar Jasika

2015	Russia Roman Safiullin	United States Tommy Paul	United States Reilly Opelka	United States Taylor Fritz

2016	Australia Oliver Anderson	France Geoffrey Blancaneaux	Canada Denis Shapovalov	Canada Félix Auger-Aliassime

2017	Hungary Zsombor Piros	Australia Alexei Popyrin	Spain Alejandro Davidovich Fokina	China Wu Yibing

2018	United States Sebastian Korda	Chinese Taipei Tseng Chun-hsin	Chinese Taipei Tseng Chun-hsin	Brazil Thiago Seyboth Wild

2019	Italy Lorenzo Musetti

Looking at the table information on 'List of Grand Slam boys' singles champions' titled 'Champions by year', write a one-sentence description of the highlighted cells and provide it inside the JSON object {"answer": "YOUR ANSWER"}.