Table:
text: 20 metre club
Members
Members of the club and the first time they put the shot more than 20 m
blank Name_ Distance Date_ Location_
1. Seppo Simola 20.15 July 19, 1972 Turku, Finland
2. Matti Yrjölä 20.04 August 2, 1972 Hämeenkyrö, Finland
3. Bo Grahn 20.09 August 3, 1972 Helsinki, Finland
4. Reijo Ståhlberg 20.38 July 26, 1973 Turku, Finland
5. Markku Tuokko 20.03 August 18, 1979 Mikkeli, Finland
6. Aulis Akonniemi 20.12 July 25, 1982 Ähtäri, Finland
7. Janne Ronkainen 20.02 May 11, 1986 Leselidse, Soviet Union
8. Jari Kuoppa 20.17 June 12, 1986 Ähtäri, Finland
9. Kari Töyrylä 20.05 July 2, 1986 Kauhajoki, Finland
10. Markus Koistinen 20.31 June 13, 1993 Luumäki, Finland
11. Mika Halvari 20.08 August 4, 1993 Kotka, Finland

Question: How many club members shot at least 20.15 when they broke 20m in a 20m clubs for the first time?